I'm trying to play through doom cooperatively with friends online and have been having fun doing d1 and d2 through doom connector using zdoom. However, when we came to play the master levels, we ran into problems. It's a pain to load each map individually, shutting the server and restarting it again after each level, so we tried to make a unified wad using the master level wad builder out there. However, the builder makes it so the master levels become a new 'episode 2' that a person can load from the menu - but on a net game through DC you can't use this feature.

Can anyone think of a solution to easily and fluidly play through the master levels Using online co-op?