diff --git a/SabreTools.Serialization/Internal.ArchiveDotOrg.cs b/SabreTools.Serialization/Internal.ArchiveDotOrg.cs
index 75e06122..36850327 100644
--- a/SabreTools.Serialization/Internal.ArchiveDotOrg.cs
+++ b/SabreTools.Serialization/Internal.ArchiveDotOrg.cs
@@ -9,6 +9,18 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.ArchiveDotOrg.Files"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromArchiveDotOrg(Models.ArchiveDotOrg.Files item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = "archive.org",
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.ArchiveDotOrg.File"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.AttractMode.cs b/SabreTools.Serialization/Internal.AttractMode.cs
index 352baa9b..8f1b5f73 100644
--- a/SabreTools.Serialization/Internal.AttractMode.cs
+++ b/SabreTools.Serialization/Internal.AttractMode.cs
@@ -9,6 +9,18 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.AttractMode.MetadataFile"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromAttractMode(Models.AttractMode.MetadataFile item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.HeaderKey] = item.Header,
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.AttractMode.Row"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.ClrMamePro.cs b/SabreTools.Serialization/Internal.ClrMamePro.cs
index acf0e0d2..45d532c6 100644
--- a/SabreTools.Serialization/Internal.ClrMamePro.cs
+++ b/SabreTools.Serialization/Internal.ClrMamePro.cs
@@ -10,6 +10,32 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.ClrMamePro.ClrMamePro"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromClrMamePro(Models.ClrMamePro.ClrMamePro item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = item.Name,
+                [Models.Internal.Header.DescriptionKey] = item.Description,
+                [Models.Internal.Header.RootDirKey] = item.RootDir,
+                [Models.Internal.Header.CategoryKey] = item.Category,
+                [Models.Internal.Header.VersionKey] = item.Version,
+                [Models.Internal.Header.DateKey] = item.Date,
+                [Models.Internal.Header.AuthorKey] = item.Author,
+                [Models.Internal.Header.HomepageKey] = item.Homepage,
+                [Models.Internal.Header.UrlKey] = item.Url,
+                [Models.Internal.Header.CommentKey] = item.Comment,
+                [Models.Internal.Header.HeaderKey] = item.Header,
+                [Models.Internal.Header.TypeKey] = item.Type,
+                [Models.Internal.Header.ForceMergingKey] = item.ForceMerging,
+                [Models.Internal.Header.ForceZippingKey] = item.ForceZipping,
+                [Models.Internal.Header.ForcePackingKey] = item.ForcePacking,
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.ClrMamePro.GameBase"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.DosCenter.cs b/SabreTools.Serialization/Internal.DosCenter.cs
index 81c463a3..1ec947d4 100644
--- a/SabreTools.Serialization/Internal.DosCenter.cs
+++ b/SabreTools.Serialization/Internal.DosCenter.cs
@@ -10,6 +10,24 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.DosCenter.DosCenter"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromArchiveDotOrg(Models.DosCenter.DosCenter item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = item.Name,
+                [Models.Internal.Header.DescriptionKey] = item.Description,
+                [Models.Internal.Header.VersionKey] = item.Version,
+                [Models.Internal.Header.DateKey] = item.Date,
+                [Models.Internal.Header.AuthorKey] = item.Author,
+                [Models.Internal.Header.HomepageKey] = item.Homepage,
+                [Models.Internal.Header.CommentKey] = item.Comment,
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.DosCenter.Game"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.EverdriveSMDB.cs b/SabreTools.Serialization/Internal.EverdriveSMDB.cs
index a45389cd..08b09ff6 100644
--- a/SabreTools.Serialization/Internal.EverdriveSMDB.cs
+++ b/SabreTools.Serialization/Internal.EverdriveSMDB.cs
@@ -1,4 +1,3 @@
-using System.Collections.Generic;
 using System.Linq;
 
 namespace SabreTools.Serialization
@@ -10,6 +9,18 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.EverdriveSMDB.MetadataFile"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromEverdriveSMDB(Models.EverdriveSMDB.MetadataFile item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = "Everdrive SMDB",
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.EverdriveSMDB.Row"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.Hashfile.cs b/SabreTools.Serialization/Internal.Hashfile.cs
index d930d2bd..3ca1e082 100644
--- a/SabreTools.Serialization/Internal.Hashfile.cs
+++ b/SabreTools.Serialization/Internal.Hashfile.cs
@@ -11,6 +11,18 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.Hashfile.Hashfile"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromHashfile(Models.Hashfile.Hashfile item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = "Hashfile",
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.Hashfile.Hashfile"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.Listrom.cs b/SabreTools.Serialization/Internal.Listrom.cs
index 67c559dd..775e2a76 100644
--- a/SabreTools.Serialization/Internal.Listrom.cs
+++ b/SabreTools.Serialization/Internal.Listrom.cs
@@ -10,6 +10,18 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.Listrom.MetadataFile"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromListrom(Models.Listrom.MetadataFile item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = "MAME Listrom",
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.Listrom.Set"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.Listxml.cs b/SabreTools.Serialization/Internal.Listxml.cs
index 6617ccce..93afdd4f 100644
--- a/SabreTools.Serialization/Internal.Listxml.cs
+++ b/SabreTools.Serialization/Internal.Listxml.cs
@@ -10,6 +10,32 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.Listxml.M1"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromListxml(Models.Listxml.M1 item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.VersionKey] = item.Version,
+            };
+            return header;
+        }
+
+        /// <summary>
+        /// Convert from <cref="Models.Listxml.Mame"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromListxml(Models.Listxml.Mame item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.BuildKey] = item.Build,
+                [Models.Internal.Header.DebugKey] = item.Debug,
+                [Models.Internal.Header.MameConfigKey] = item.MameConfig,
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.Listxml.GameBase"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.Logiqx.cs b/SabreTools.Serialization/Internal.Logiqx.cs
index 57009074..a28f23b5 100644
--- a/SabreTools.Serialization/Internal.Logiqx.cs
+++ b/SabreTools.Serialization/Internal.Logiqx.cs
@@ -10,6 +10,50 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.Logiqx.Header"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromLogiqx(Models.Logiqx.Header item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.IdKey] = item.Id,
+                [Models.Internal.Header.NameKey] = item.Name,
+                [Models.Internal.Header.DescriptionKey] = item.Description,
+                [Models.Internal.Header.RootDirKey] = item.RootDir,
+                [Models.Internal.Header.CategoryKey] = item.Category,
+                [Models.Internal.Header.VersionKey] = item.Version,
+                [Models.Internal.Header.DateKey] = item.Date,
+                [Models.Internal.Header.AuthorKey] = item.Author,
+                [Models.Internal.Header.EmailKey] = item.Email,
+                [Models.Internal.Header.HomepageKey] = item.Homepage,
+                [Models.Internal.Header.UrlKey] = item.Url,
+                [Models.Internal.Header.CommentKey] = item.Comment,
+                [Models.Internal.Header.TypeKey] = item.Type,
+            };
+
+            if (item.ClrMamePro != null)
+            {
+                header[Models.Internal.Header.HeaderKey] = item.ClrMamePro.Header;
+                header[Models.Internal.Header.ForceMergingKey] = item.ClrMamePro.ForceMerging;
+                header[Models.Internal.Header.ForceNodumpKey] = item.ClrMamePro.ForceNodump;
+                header[Models.Internal.Header.ForcePackingKey] = item.ClrMamePro.ForcePacking;
+            }
+
+            if (item.RomCenter != null)
+            {
+                header[Models.Internal.Header.PluginKey] = item.RomCenter.Plugin;
+                header[Models.Internal.Header.RomModeKey] = item.RomCenter.RomMode;
+                header[Models.Internal.Header.BiosModeKey] = item.RomCenter.BiosMode;
+                header[Models.Internal.Header.SampleModeKey] = item.RomCenter.SampleMode;
+                header[Models.Internal.Header.LockRomModeKey] = item.RomCenter.LockRomMode;
+                header[Models.Internal.Header.LockBiosModeKey] = item.RomCenter.LockBiosMode;
+                header[Models.Internal.Header.LockSampleModeKey] = item.RomCenter.LockSampleMode;
+            }
+
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.Logiqx.GameBase"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.OfflineList.cs b/SabreTools.Serialization/Internal.OfflineList.cs
index b55f9f0e..1548140a 100644
--- a/SabreTools.Serialization/Internal.OfflineList.cs
+++ b/SabreTools.Serialization/Internal.OfflineList.cs
@@ -10,6 +10,39 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.OfflineList.Dat"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromOfflineList(Models.OfflineList.Dat item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NoNamespaceSchemaLocationKey] = item.NoNamespaceSchemaLocation,
+            };
+
+            if (item.Configuration != null)
+            {
+                header[Models.Internal.Header.NameKey] = item.Configuration.DatName;
+                header[Models.Internal.Header.ImFolderKey] = item.Configuration.ImFolder;
+                header[Models.Internal.Header.DatVersionKey] = item.Configuration.DatVersion;
+                header[Models.Internal.Header.SystemKey] = item.Configuration.System;
+                header[Models.Internal.Header.ScreenshotsWidthKey] = item.Configuration.ScreenshotsWidth;
+                header[Models.Internal.Header.ScreenshotsHeightKey] = item.Configuration.ScreenshotsHeight;
+                header[Models.Internal.Header.InfosKey] = item.Configuration.Infos;
+                header[Models.Internal.Header.CanOpenKey] = item.Configuration.CanOpen;
+                header[Models.Internal.Header.NewDatKey] = item.Configuration.NewDat;
+                header[Models.Internal.Header.SearchKey] = item.Configuration.Search;
+                header[Models.Internal.Header.RomTitleKey] = item.Configuration.RomTitle;
+            }
+
+            if (item.GUI != null)
+            {
+                header[Models.Internal.Header.ImagesKey] = item.GUI.Images;
+            }
+
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.OfflineList.Game"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.OpenMSX.cs b/SabreTools.Serialization/Internal.OpenMSX.cs
index 8280a04f..eaf9d5ed 100644
--- a/SabreTools.Serialization/Internal.OpenMSX.cs
+++ b/SabreTools.Serialization/Internal.OpenMSX.cs
@@ -10,6 +10,18 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.OpenMSX.SoftwareDb"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromOpenMSX(Models.OpenMSX.SoftwareDb item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.TimestampKey] = item.Timestamp,
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.OpenMSX.Software"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.RomCenter.cs b/SabreTools.Serialization/Internal.RomCenter.cs
index 3673758a..53ce7d63 100644
--- a/SabreTools.Serialization/Internal.RomCenter.cs
+++ b/SabreTools.Serialization/Internal.RomCenter.cs
@@ -9,6 +9,44 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.RomCenter.MetadataFile"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromRomCenter(Models.RomCenter.MetadataFile item)
+        {
+            var header = new Models.Internal.Header();
+
+            if (item.Credits != null)
+            {
+                header[Models.Internal.Header.AuthorKey] = item.Credits.Author;
+                header[Models.Internal.Header.VersionKey] = item.Credits.Version;
+                header[Models.Internal.Header.EmailKey] = item.Credits.Email;
+                header[Models.Internal.Header.HomepageKey] = item.Credits.Homepage;
+                header[Models.Internal.Header.UrlKey] = item.Credits.Url;
+                header[Models.Internal.Header.DateKey] = item.Credits.Date;
+                header[Models.Internal.Header.CommentKey] = item.Credits.Comment;
+            }
+
+            if (item.Dat != null)
+            {
+                header[Models.Internal.Header.DatVersionKey] = item.Dat.Version;
+                header[Models.Internal.Header.PluginKey] = item.Dat.Plugin;
+
+                if (item.Dat.Split == "yes" || item.Dat.Split == "1")
+                    header[Models.Internal.Header.ForceMergingKey] = "split";
+                else if (item.Dat.Merge == "yes" || item.Dat.Merge == "1")
+                    header[Models.Internal.Header.ForceMergingKey] = "merge";
+            }
+
+            if (item.Emulator != null)
+            {
+                header[Models.Internal.Header.RefNameKey] = item.Emulator.RefName;
+                header[Models.Internal.Header.EmulatorVersionKey] = item.Emulator.Version;
+            }
+
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.RomCenter.Game"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
@@ -17,7 +55,7 @@ namespace SabreTools.Serialization
             var machine = new Models.Internal.Machine
             {
                 [Models.Internal.Machine.RomOfKey] = item.ParentName,
-                //[Models.Internal.Machine.RomOfKey] = item.ParentDescription, // This is unmappable
+                //[Models.Internal.Machine.ParentDescriptionKey] = item.ParentDescription, // This is unmappable
                 [Models.Internal.Machine.NameKey] = item.GameName,
                 [Models.Internal.Machine.DescriptionKey] = item.GameDescription,
                 [Models.Internal.Machine.RomKey] = new Models.Internal.Rom[] { ConvertFromRomCenter(item) },
diff --git a/SabreTools.Serialization/Internal.SeparatedValue.cs b/SabreTools.Serialization/Internal.SeparatedValue.cs
index ebeef684..86ba4736 100644
--- a/SabreTools.Serialization/Internal.SeparatedValue.cs
+++ b/SabreTools.Serialization/Internal.SeparatedValue.cs
@@ -10,6 +10,27 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.SeparatedValue.MetadataFile"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromArchiveDotOrg(Models.SeparatedValue.MetadataFile item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.HeaderKey] = item.Header,
+            };
+
+            if (item.Row != null && item.Row.Any())
+            {
+                var first = item.Row[0];
+                //header[Models.Internal.Header.FileNameKey] = first.FileName; // Not possible to map
+                header[Models.Internal.Header.NameKey] = first.FileName;
+                header[Models.Internal.Header.DescriptionKey] = first.Description;
+            }
+
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.SeparatedValue.Row"/> to <cref="Models.Internal.Machine"/>
         /// </summary>
diff --git a/SabreTools.Serialization/Internal.SoftwareList.cs b/SabreTools.Serialization/Internal.SoftwareList.cs
index 8d81dc5b..c2f0ad28 100644
--- a/SabreTools.Serialization/Internal.SoftwareList.cs
+++ b/SabreTools.Serialization/Internal.SoftwareList.cs
@@ -10,6 +10,20 @@ namespace SabreTools.Serialization
     {
         #region Serialize
 
+        /// <summary>
+        /// Convert from <cref="Models.SoftwareList.SoftwareList"/> to <cref="Models.Internal.Header"/>
+        /// </summary>
+        public static Models.Internal.Header ConvertHeaderFromSoftwareList(Models.SoftwareList.SoftwareList item)
+        {
+            var header = new Models.Internal.Header
+            {
+                [Models.Internal.Header.NameKey] = item.Name,
+                [Models.Internal.Header.DescriptionKey] = item.Description,
+                [Models.Internal.Header.NotesKey] = item.Notes,
+            };
+            return header;
+        }
+
         /// <summary>
         /// Convert from <cref="Models.SoftwareList.Software"/> to <cref="Models.Internal.Machine"/>
         /// </summary>