How to group/ungroup maps in/from wad file?

[Jaromir83]

Do you pls somebody know how to group/ungroup maps in/from wad file? I have wad with 15 levels and I want to separate one of these levels to a single wad. I think I used DEU editor for this, now I use Wadauthor. Thank you.

[J-Dub]

If you have Windows and .NET:

• open the file with zWad
  
• Hold the shift button to select the map entries from MAP## to SCRIPT##
  
• Goto "Edit > Export > Grouped .WAD"