diff --git a/SabreTools.Helper/Tools/DatTools.cs b/SabreTools.Helper/Tools/DatTools.cs
index 2ca2198a..b97dc3f2 100644
--- a/SabreTools.Helper/Tools/DatTools.cs
+++ b/SabreTools.Helper/Tools/DatTools.cs
@@ -1867,198 +1867,6 @@ namespace SabreTools.Helper
 			return datHeaders;
 		}
 
-		/// <summary>
-		/// Filter an input DAT file
-		/// </summary>
-		/// <param name="datdata">User specified inputs contained in a DatData object</param>
-		/// <param name="gamename">Name of the game to match (can use asterisk-partials)</param>
-		/// <param name="romname">Name of the rom to match (can use asterisk-partials)</param>
-		/// <param name="romtype">Type of the rom to match</param>
-		/// <param name="sgt">Find roms greater than or equal to this size</param>
-		/// <param name="slt">Find roms less than or equal to this size</param>
-		/// <param name="seq">Find roms equal to this size</param>
-		/// <param name="crc">CRC of the rom to match (can use asterisk-partials)</param>
-		/// <param name="md5">MD5 of the rom to match (can use asterisk-partials)</param>
-		/// <param name="sha1">SHA-1 of the rom to match (can use asterisk-partials)</param>
-		/// <param name="nodump">Select roms with nodump status as follows: null (match all), true (match Nodump only), false (exclude Nodump)</param>
-		/// <param name="trim">True if we are supposed to trim names to NTFS length, false otherwise</param>
-		/// <param name="single">True if all games should be replaced by '!', false otherwise</param>
-		/// <param name="root">String representing root directory to compare against for length calculation</param>
-		/// <param name="logger">Logging object for console and file output</param>
-		/// <returns>Returns filtered DatData object</returns>
-		public static Dat Filter(Dat datdata, string gamename, string romname, string romtype, long sgt,
-			long slt, long seq, string crc, string md5, string sha1, bool? nodump, bool trim, bool single, string root, Logger logger)
-		{
-			// Now loop through and create a new Rom dictionary using filtered values
-			Dictionary<string, List<Rom>> dict = new Dictionary<string, List<Rom>>();
-			List<string> keys = datdata.Files.Keys.ToList();
-			foreach (string key in keys)
-			{
-				List<Rom> roms = datdata.Files[key];
-				for (int i = 0; i < roms.Count; i++)
-				{
-					Rom rom = roms[i];
-
-					// Filter on nodump status
-					if (nodump == true && !rom.Nodump)
-					{
-						continue;
-					}
-					if (nodump == false && rom.Nodump)
-					{
-						continue;
-					}
-
-					// Filter on game name
-					if (gamename != "")
-					{
-						if (gamename.StartsWith("*") && gamename.EndsWith("*") && !rom.Machine.Name.ToLowerInvariant().Contains(gamename.ToLowerInvariant().Replace("*", "")))
-						{
-							continue;
-						}
-						else if (gamename.StartsWith("*") && !rom.Machine.Name.EndsWith(gamename.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-						else if (gamename.EndsWith("*") && !rom.Machine.Name.StartsWith(gamename.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-					}
-
-					// Filter on rom name
-					if (romname != "")
-					{
-						if (romname.StartsWith("*") && romname.EndsWith("*") && !rom.Name.ToLowerInvariant().Contains(romname.ToLowerInvariant().Replace("*", "")))
-						{
-							continue;
-						}
-						else if (romname.StartsWith("*") && !rom.Name.EndsWith(romname.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-						else if (romname.EndsWith("*") && !rom.Name.StartsWith(romname.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-					}
-
-					// Filter on rom type
-					if (romtype != "" && rom.Type.ToString().ToLowerInvariant() != romtype.ToLowerInvariant())
-					{
-						continue;
-					}
-
-					// Filter on rom size
-					if (seq != -1 && rom.HashData.Size != seq)
-					{
-						continue;
-					}
-					else
-					{
-						if (sgt != -1 && rom.HashData.Size < sgt)
-						{
-							continue;
-						}
-						if (slt != -1 && rom.HashData.Size > slt)
-						{
-							continue;
-						}
-					}
-
-					// Filter on crc
-					if (crc != "")
-					{
-						if (crc.StartsWith("*") && crc.EndsWith("*") && !rom.HashData.CRC.ToLowerInvariant().Contains(crc.ToLowerInvariant().Replace("*", "")))
-						{
-							continue;
-						}
-						else if (crc.StartsWith("*") && !rom.HashData.CRC.EndsWith(crc.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-						else if (crc.EndsWith("*") && !rom.HashData.CRC.StartsWith(crc.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-					}
-
-					// Filter on md5
-					if (md5 != "")
-					{
-						if (md5.StartsWith("*") && md5.EndsWith("*") && !rom.HashData.MD5.ToLowerInvariant().Contains(md5.ToLowerInvariant().Replace("*", "")))
-						{
-							continue;
-						}
-						else if (md5.StartsWith("*") && !rom.HashData.MD5.EndsWith(md5.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-						else if (md5.EndsWith("*") && !rom.HashData.MD5.StartsWith(md5.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-					}
-
-					// Filter on sha1
-					if (sha1 != "")
-					{
-						if (sha1.StartsWith("*") && sha1.EndsWith("*") && !rom.HashData.SHA1.ToLowerInvariant().Contains(sha1.ToLowerInvariant().Replace("*", "")))
-						{
-							continue;
-						}
-						else if (sha1.StartsWith("*") && !rom.HashData.SHA1.EndsWith(sha1.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-						else if (sha1.EndsWith("*") && !rom.HashData.SHA1.StartsWith(sha1.Replace("*", ""), StringComparison.InvariantCultureIgnoreCase))
-						{
-							continue;
-						}
-					}
-
-					// If we are in single game mode, rename all games
-					if (single)
-					{
-						rom.Machine.Name = "!";
-					}
-
-					// If we are in NTFS trim mode, trim the game name
-					if (trim)
-					{
-						// Windows max name length is 260
-						int usableLength = 260 - rom.Machine.Name.Length - root.Length;
-						if (rom.Name.Length > usableLength)
-						{
-							string ext = Path.GetExtension(rom.Name);
-							rom.Name = rom.Name.Substring(0, usableLength - ext.Length);
-							rom.Name += ext;
-						}
-					}
-
-					// If it made it this far, add the rom to the output dictionary
-					if (dict.ContainsKey(key))
-					{
-						dict[key].Add(rom);
-					}
-					else
-					{
-						List<Rom> temp = new List<Rom>();
-						temp.Add(rom);
-						dict.Add(key, temp);
-					}
-				}
-
-				// Now clean up by removing the old list
-				datdata.Files[key] = null;
-			}
-
-			// Resassign the new dictionary to the DatData object
-			datdata.Files = dict;
-
-			return datdata;
-		}
-
 		/// <summary>
 		/// Determine if a rom should be included based on filters
 		/// </summary>