It would be relatively simple if you know how to edit the MAIN.SCR file, you just find the part that controls Warrants
& shut it off, like SANGA opening the while map from the start. The problem is that it's buried somewhere in 550,000
(yes I verified that) of code.
If you're brave enough, get BW's Mission builder (in downloads) & open it up, just remember -
BACK UP EVERY FILE YOU PLAN TO EDIT!!! (screw it up & it's your problem.)