If I had to guess, a severe issue that did not allow them to be kept in. If that is the case, they will likely be added back later.Search into the folder "mods\Sideloader Modpack - Uncensor Selector\BetterPenetration" in R11 and copy/paste the files in the same (empty) folder in BR R12.
I have no idea why these mods have been removed in the last repack, same thing in HS2 R8...