diff --git a/SabreTools.DatFiles/Formats/ArchiveDotOrg.Writer.cs b/SabreTools.DatFiles/Formats/ArchiveDotOrg.Writer.cs
index a64cd539..5065a16b 100644
--- a/SabreTools.DatFiles/Formats/ArchiveDotOrg.Writer.cs
+++ b/SabreTools.DatFiles/Formats/ArchiveDotOrg.Writer.cs
@@ -93,8 +93,14 @@ namespace SabreTools.DatFiles.Formats
                     continue;
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/AttractMode.Writer.cs b/SabreTools.DatFiles/Formats/AttractMode.Writer.cs
index fad1070a..5573c85c 100644
--- a/SabreTools.DatFiles/Formats/AttractMode.Writer.cs
+++ b/SabreTools.DatFiles/Formats/AttractMode.Writer.cs
@@ -89,8 +89,14 @@ namespace SabreTools.DatFiles.Formats
                     continue;
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/ClrMamePro.Writer.cs b/SabreTools.DatFiles/Formats/ClrMamePro.Writer.cs
index 292ab6a3..694323c1 100644
--- a/SabreTools.DatFiles/Formats/ClrMamePro.Writer.cs
+++ b/SabreTools.DatFiles/Formats/ClrMamePro.Writer.cs
@@ -254,8 +254,14 @@ namespace SabreTools.DatFiles.Formats
                 var dipswitches = new List<Models.ClrMamePro.DipSwitch>();
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/DosCenter.Writer.cs b/SabreTools.DatFiles/Formats/DosCenter.Writer.cs
index b787f2f0..57373dc2 100644
--- a/SabreTools.DatFiles/Formats/DosCenter.Writer.cs
+++ b/SabreTools.DatFiles/Formats/DosCenter.Writer.cs
@@ -140,8 +140,14 @@ namespace SabreTools.DatFiles.Formats
                 var files = new List<Models.DosCenter.File>();
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/EverdriveSMDB.Writer.cs b/SabreTools.DatFiles/Formats/EverdriveSMDB.Writer.cs
index ab3fddf8..f89e17f2 100644
--- a/SabreTools.DatFiles/Formats/EverdriveSMDB.Writer.cs
+++ b/SabreTools.DatFiles/Formats/EverdriveSMDB.Writer.cs
@@ -106,8 +106,14 @@ namespace SabreTools.DatFiles.Formats
                     continue;
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/Hashfile.Writer.cs b/SabreTools.DatFiles/Formats/Hashfile.Writer.cs
index 5b78dc87..f259a2d0 100644
--- a/SabreTools.DatFiles/Formats/Hashfile.Writer.cs
+++ b/SabreTools.DatFiles/Formats/Hashfile.Writer.cs
@@ -226,8 +226,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
@@ -268,8 +275,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
@@ -326,8 +340,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
@@ -384,8 +405,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
@@ -434,8 +462,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
@@ -476,8 +511,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
@@ -518,8 +560,15 @@ namespace SabreTools.DatFiles.Formats
                 if (items == null || !items.Any())
                     continue;
 
-                foreach (var item in items)
+                // Loop through and convert the items to respective lists
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/Listrom.Writer.cs b/SabreTools.DatFiles/Formats/Listrom.Writer.cs
index d8ca951b..3622cf49 100644
--- a/SabreTools.DatFiles/Formats/Listrom.Writer.cs
+++ b/SabreTools.DatFiles/Formats/Listrom.Writer.cs
@@ -120,8 +120,14 @@ namespace SabreTools.DatFiles.Formats
                 };
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/RomCenter.Writer.cs b/SabreTools.DatFiles/Formats/RomCenter.Writer.cs
index 3b589760..f0c44c88 100644
--- a/SabreTools.DatFiles/Formats/RomCenter.Writer.cs
+++ b/SabreTools.DatFiles/Formats/RomCenter.Writer.cs
@@ -151,8 +151,14 @@ namespace SabreTools.DatFiles.Formats
                     continue;
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.DatFiles/Formats/SeparatedValue.Writer.cs b/SabreTools.DatFiles/Formats/SeparatedValue.Writer.cs
index 82ce9912..0d8a22cf 100644
--- a/SabreTools.DatFiles/Formats/SeparatedValue.Writer.cs
+++ b/SabreTools.DatFiles/Formats/SeparatedValue.Writer.cs
@@ -121,8 +121,14 @@ namespace SabreTools.DatFiles.Formats
                     continue;
 
                 // Loop through and convert the items to respective lists
-                foreach (var item in items)
+                for (int index = 0; index < items.Count; index++)
                 {
+                    // Get the item
+                    var item = items[index];
+
+                    // Check for a "null" item
+                    item = ProcessNullifiedItem(item);
+
                     // Skip if we're ignoring the item
                     if (ShouldIgnore(item, ignoreblanks))
                         continue;
diff --git a/SabreTools.Serialization/XmlSerializer.Serializer.cs b/SabreTools.Serialization/XmlSerializer.Serializer.cs
index 1b726856..0fa27c80 100644
--- a/SabreTools.Serialization/XmlSerializer.Serializer.cs
+++ b/SabreTools.Serialization/XmlSerializer.Serializer.cs
@@ -45,6 +45,7 @@ namespace SabreTools.Serialization
                 CheckCharacters = false,
                 Encoding = Encoding.UTF8,
                 Indent = true,
+                IndentChars = "\t",
                 NewLineChars = "\n",
             };
             var stream = new MemoryStream();