When I did update I change some files and of course keep files which don't was changed, so you just replace new .brz file on old.
If you don't like previous SS Uniform mods you can delete them, I make 4 base mods - 1) waffenSScamo, 2) 12SS version1, 3) 12SS version2, 4) DasReich.
You can use 1 of these mods, or change them when you play different missions.
Difference between mods -
1) WaffenSScamo - my first mod which include many types of SS camouflage.
2) 12SS - uniform of 12SS pzdiv HitlerJugend, which have 2 versions with different types of plane tree, blurred edges, and helmet covers.
2) DasReich - same mode like a 12SS version 2 but without Italian camo patterns, better to use with Das Reich, Totenkopf or Hohenstaufen divisions.