diff --git a/SabreTools.Helper/Data/Structs.cs b/SabreTools.Helper/Data/Structs.cs
index a57ffbb1..9cca3067 100644
--- a/SabreTools.Helper/Data/Structs.cs
+++ b/SabreTools.Helper/Data/Structs.cs
@@ -18,10 +18,8 @@ namespace SabreTools.Helper
 		public DupeType Dupe;
 		public bool Nodump;
 		public string Date;
-		public string System;
-		public int SystemID;
-		public string Source;
-		public int SourceID;
+		public SystemData SystemData;
+		public SourceData SourceData;
 
 		public int CompareTo(object obj)
 		{
@@ -53,6 +51,25 @@ namespace SabreTools.Helper
 		}
 	}
 
+	/// <summary>
+	/// Intermediate struct for holding System information
+	/// </summary>
+	public struct SystemData
+	{
+		public int ID;
+		public string Name;
+	}
+
+	/// <summary>
+	/// Intermediate struct for holding Source information
+	/// </summary>
+	public struct SourceData
+	{
+		public int ID;
+		public string Name;
+		public string URL;
+	}
+
 	/// <summary>
 	/// Intermediate struct for holding DAT information
 	/// </summary>
diff --git a/SabreTools.Helper/Tools/DatTools.cs b/SabreTools.Helper/Tools/DatTools.cs
index 005e6dcf..060550be 100644
--- a/SabreTools.Helper/Tools/DatTools.cs
+++ b/SabreTools.Helper/Tools/DatTools.cs
@@ -173,8 +173,8 @@ namespace SabreTools.Helper
 					{
 						Game = gamename,
 						Type = (line.Trim().StartsWith("disk (") ? "disk" : "rom"),
-						SystemID = sysid,
-						SourceID = srcid,
+						SystemData = new SystemData { ID = sysid },
+						SourceData = new SourceData { ID = srcid },
 					};
 
 					string[] gc = line.Trim().Split(' ');
@@ -577,8 +577,8 @@ namespace SabreTools.Helper
 							Name = rominfo[5],
 							CRC = rominfo[6].ToLowerInvariant(),
 							Size = Int64.Parse(rominfo[7]),
-							SystemID = sysid,
-							SourceID = srcid,
+							SystemData = new SystemData { ID = sysid },
+							SourceData = new SourceData { ID = srcid },
 						};
 
 						// Sanitize the hashes from null, hex sizes, and "true blank" strings
@@ -1152,15 +1152,14 @@ namespace SabreTools.Helper
 													Game = tempname,
 													Name = subreader.GetAttribute("name"),
 													Type = subreader.Name,
-													SystemID = sysid,
-													SourceID = srcid,
 													Size = size,
 													CRC = crc,
 													MD5 = md5,
 													SHA1 = sha1,
-													System = filename,
 													Nodump = nodump,
 													Date = date,
+													SystemData = new SystemData { ID = sysid, Name = filename },
+													SourceData = new SourceData { ID = srcid },
 												};
 
 												if (datdata.Roms.ContainsKey(key))
@@ -1389,15 +1388,14 @@ namespace SabreTools.Helper
 									Game = tempname,
 									Name = xtr.GetAttribute("name"),
 									Type = xtr.GetAttribute("type"),
-									SystemID = sysid,
-									SourceID = srcid,
 									Size = size,
 									CRC = crc,
 									MD5 = md5,
 									SHA1 = sha1,
-									System = filename,
 									Nodump = nodump,
 									Date = date,
+									SystemData = new SystemData { ID = sysid, Name = filename },
+									SourceData = new SourceData { ID = srcid },
 								};
 
 								if (datdata.Roms.ContainsKey(key))
@@ -1467,7 +1465,7 @@ namespace SabreTools.Helper
 				foreach (RomData rom in newroms)
 				{
 					count++;
-					string key = (norename ? "" : rom.SystemID.ToString().PadLeft(10, '0') + "-" + rom.SourceID.ToString().PadLeft(10, '0') + "-") + rom.Game.ToLowerInvariant();
+					string key = (norename ? "" : rom.SystemData.ID.ToString().PadLeft(10, '0') + "-" + rom.SourceData.ID.ToString().PadLeft(10, '0') + "-") + rom.Game.ToLowerInvariant();
 					if (sortable.ContainsKey(key))
 					{
 						sortable[key].Add(rom);
diff --git a/SabreTools.Helper/Tools/RomTools.cs b/SabreTools.Helper/Tools/RomTools.cs
index 22ac9d03..12ccdeb6 100644
--- a/SabreTools.Helper/Tools/RomTools.cs
+++ b/SabreTools.Helper/Tools/RomTools.cs
@@ -209,19 +209,17 @@ namespace SabreTools.Helper
 							savedrom.Dupe = dupetype;
 
 							// If the current system has a lower ID than the previous, set the system accordingly
-							if (rom.SystemID < savedrom.SystemID)
+							if (rom.SystemData.ID < savedrom.SystemData.ID)
 							{
-								savedrom.SystemID = rom.SystemID;
-								savedrom.System = rom.System;
+								savedrom.SystemData = rom.SystemData;
 								savedrom.Game = rom.Game;
 								savedrom.Name = rom.Name;
 							}
 
 							// If the current source has a lower ID than the previous, set the source accordingly
-							if (rom.SourceID < savedrom.SourceID)
+							if (rom.SourceData.ID < savedrom.SourceData.ID)
 							{
-								savedrom.SourceID = rom.SourceID;
-								savedrom.Source = rom.Source;
+								savedrom.SourceData = rom.SourceData;
 								savedrom.Game = rom.Game;
 								savedrom.Name = rom.Name;
 							}
@@ -334,7 +332,7 @@ namespace SabreTools.Helper
 			}
 
 			// If the duplicate is external already or should be, set it
-			if (lastrom.Dupe >= DupeType.ExternalHash || lastrom.SystemID != rom.SystemID || lastrom.SourceID != rom.SourceID)
+			if (lastrom.Dupe >= DupeType.ExternalHash || lastrom.SystemData.ID != rom.SystemData.ID || lastrom.SourceData.ID != rom.SourceData.ID)
 			{
 				if (lastrom.Game == rom.Game && lastrom.Name == rom.Name)
 				{
@@ -372,9 +370,9 @@ namespace SabreTools.Helper
 		{
 			roms.Sort(delegate (RomData x, RomData y)
 			{
-				if (x.SystemID == y.SystemID)
+				if (x.SystemData.ID == y.SystemData.ID)
 				{
-					if (x.SourceID == y.SourceID)
+					if (x.SourceData.ID == y.SourceData.ID)
 					{
 						if (x.Game == y.Game)
 						{
@@ -382,9 +380,9 @@ namespace SabreTools.Helper
 						}
 						return String.Compare(x.Game, y.Game);
 					}
-					return (norename ? String.Compare(x.Game, y.Game) : x.SourceID - y.SourceID);
+					return (norename ? String.Compare(x.Game, y.Game) : x.SourceData.ID - y.SourceData.ID);
 				}
-				return (norename ? String.Compare(x.Game, y.Game) : x.SystemID - y.SystemID);
+				return (norename ? String.Compare(x.Game, y.Game) : x.SystemData.ID - y.SystemData.ID);
 			});
 			return true;
 		}
diff --git a/SabreTools/ImportExport/GenerateTwo.cs b/SabreTools/ImportExport/GenerateTwo.cs
index 20e29f29..f88af5d9 100644
--- a/SabreTools/ImportExport/GenerateTwo.cs
+++ b/SabreTools/ImportExport/GenerateTwo.cs
@@ -223,13 +223,13 @@ namespace SabreTools
 
 					if (!_norename)
 					{
-						rom.Game += " [" + sources[rom.SourceID] + "]";
+						rom.Game += " [" + sources[rom.SourceData.ID] + "]";
 					}
 
 					// If a game has source "0" it's Default. Make this Int32.MaxValue for sorting purposes
-					if (rom.SourceID == 0)
+					if (rom.SourceData.ID == 0)
 					{
-						rom.SourceID = Int32.MaxValue;
+						rom.SourceData.ID = Int32.MaxValue;
 					}
 
 					temp.Add(rom);
diff --git a/SabreTools/MergeDiff.cs b/SabreTools/MergeDiff.cs
index 84946634..0e25554a 100644
--- a/SabreTools/MergeDiff.cs
+++ b/SabreTools/MergeDiff.cs
@@ -287,20 +287,20 @@ namespace SabreTools
 						if (rom.Dupe < DupeType.ExternalHash)
 						{
 							// Individual DATs that are output
-							if (outDats[rom.SystemID].Roms.ContainsKey(key))
+							if (outDats[rom.SystemData.ID].Roms.ContainsKey(key))
 							{
-								outDats[rom.SystemID].Roms[key].Add(rom);
+								outDats[rom.SystemData.ID].Roms[key].Add(rom);
 							}
 							else
 							{
 								List<RomData> tl = new List<RomData>();
 								tl.Add(rom);
-								outDats[rom.SystemID].Roms.Add(key, tl);
+								outDats[rom.SystemData.ID].Roms.Add(key, tl);
 							}
 
 							// Merged no-duplicates DAT
 							RomData newrom = rom;
-							newrom.Game += " (" + Path.GetFileNameWithoutExtension(_inputs[newrom.SystemID].Split('¬')[0]) + ")";
+							newrom.Game += " (" + Path.GetFileNameWithoutExtension(_inputs[newrom.SystemData.ID].Split('¬')[0]) + ")";
 
 							if (outerDiffData.Roms.ContainsKey(key))
 							{
@@ -318,7 +318,7 @@ namespace SabreTools
 						if (rom.Dupe >= DupeType.ExternalHash)
 						{
 							RomData newrom = rom;
-							newrom.Game += " (" + Path.GetFileNameWithoutExtension(_inputs[newrom.SystemID].Split('¬')[0]) + ")";
+							newrom.Game += " (" + Path.GetFileNameWithoutExtension(_inputs[newrom.SystemData.ID].Split('¬')[0]) + ")";
 
 							if (dupeData.Roms.ContainsKey(key))
 							{
@@ -420,15 +420,15 @@ namespace SabreTools
 				{
 					foreach (RomData rom in roms)
 					{
-						if (outDats[rom.SystemID].Roms.ContainsKey(key))
+						if (outDats[rom.SystemData.ID].Roms.ContainsKey(key))
 						{
-							outDats[rom.SystemID].Roms[key].Add(rom);
+							outDats[rom.SystemData.ID].Roms[key].Add(rom);
 						}
 						else
 						{
 							List<RomData> tl = new List<RomData>();
 							tl.Add(rom);
-							outDats[rom.SystemID].Roms.Add(key, tl);
+							outDats[rom.SystemData.ID].Roms.Add(key, tl);
 						}
 					}
 				}
@@ -477,8 +477,8 @@ namespace SabreTools
 					foreach (RomData rom in userData.Roms[key])
 					{
 						RomData newrom = rom;
-						string filename = _inputs[newrom.SystemID].Split('¬')[0];
-						string rootpath = _inputs[newrom.SystemID].Split('¬')[1];
+						string filename = _inputs[newrom.SystemData.ID].Split('¬')[0];
+						string rootpath = _inputs[newrom.SystemData.ID].Split('¬')[1];
 
 						rootpath += (rootpath == "" ? "" : Path.DirectorySeparatorChar.ToString());
 						filename = filename.Remove(0, rootpath.Length);
diff --git a/SabreTools/OfflineMerge.cs b/SabreTools/OfflineMerge.cs
index 3c3c5096..f2ee4e3d 100644
--- a/SabreTools/OfflineMerge.cs
+++ b/SabreTools/OfflineMerge.cs
@@ -69,7 +69,7 @@ namespace SabreTools
 					List<RomData> templist = RomTools.Merge(completeDats.Roms[key], _logger);
 					foreach (RomData rom in templist)
 					{
-						if (rom.Dupe == DupeType.None && rom.System == _currentNewMerged)
+						if (rom.Dupe == DupeType.None && rom.SystemData.Name == _currentNewMerged)
 						{
 							if (netNew.ContainsKey(key))
 							{
@@ -93,7 +93,7 @@ namespace SabreTools
 					List<RomData> templist = RomTools.Merge(completeDats.Roms[key], _logger);
 					foreach (RomData rom in templist)
 					{
-						if (rom.Dupe == DupeType.None && rom.System == _currentAllMerged)
+						if (rom.Dupe == DupeType.None && rom.SystemData.Name == _currentAllMerged)
 						{
 							if (unneeded.ContainsKey(key))
 							{
@@ -130,7 +130,7 @@ namespace SabreTools
 					List<RomData> templist = RomTools.Merge(midMissing.Roms[key], _logger);
 					foreach (RomData rom in templist)
 					{
-						if (rom.Dupe == DupeType.None && rom.System == _currentMissingMerged)
+						if (rom.Dupe == DupeType.None && rom.SystemData.Name == _currentMissingMerged)
 						{
 							if (newMissing.ContainsKey(key))
 							{
@@ -177,7 +177,7 @@ namespace SabreTools
 					{
 						foreach (RomData rom in completeDats.Roms[key])
 						{
-							if (rom.System == _currentNewMerged)
+							if (rom.SystemData.Name == _currentNewMerged)
 							{
 								midHave[key].Add(rom);
 							}
@@ -188,7 +188,7 @@ namespace SabreTools
 						List<RomData> roms = new List<RomData>();
 						foreach (RomData rom in completeDats.Roms[key])
 						{
-							if (rom.System == _currentNewMerged)
+							if (rom.SystemData.Name == _currentNewMerged)
 							{
 								roms.Add(rom);
 							}
@@ -202,7 +202,7 @@ namespace SabreTools
 					List<RomData> templist = RomTools.Merge(midHave[key], _logger);
 					foreach (RomData rom in templist)
 					{
-						if (rom.Dupe == DupeType.None && rom.System == _currentNewMerged)
+						if (rom.Dupe == DupeType.None && rom.SystemData.Name == _currentNewMerged)
 						{
 							if (have.ContainsKey(key))
 							{
@@ -370,7 +370,7 @@ namespace SabreTools
 					List<RomData> templist = RomTools.Merge(midHave.Roms[key], _logger);
 					foreach (RomData rom in templist)
 					{
-						if (rom.Dupe == DupeType.None && rom.System == _currentAllMerged)
+						if (rom.Dupe == DupeType.None && rom.SystemData.Name == _currentAllMerged)
 						{
 							if (have.ContainsKey(key))
 							{
@@ -440,7 +440,7 @@ namespace SabreTools
 					List<RomData> templist = RomTools.Merge(midHave.Roms[key], _logger);
 					foreach (RomData rom in templist)
 					{
-						if (rom.Dupe == DupeType.None && rom.System == _currentNewMerged)
+						if (rom.Dupe == DupeType.None && rom.SystemData.Name == _currentNewMerged)
 						{
 							if (have.ContainsKey(key))
 							{