How do people edit valve maps without having a ton of decompile errors?

goem

L3: Member
Sep 15, 2016
104
83
Is there some way to decompile cleanly rather than just downloading the one's from the Decompiled Valve Maps list, or do you just have to go through and correct every single areaportal, hole, etc.?
 

Crowbar

Spiritual preprocessor
aa
Dec 19, 2015
1,455
1,297
Some maps have SDK versions that are original VMFs. The catch is, the pool of these maps is very limited and these are nearly the 1st versions of the maps, so nothing that was added or fixed is present.
Taking that huge catch into consideration, yeah man it's simple enough - they fix it.