"Add CAS Part swatch" also overriding original [ solved ]

So I'm trying to mess around with the vampire face details added in the Vampires game pack - namely, I wanted some subtler versions of the various wrinkles and cracks. I figured the best way to do it would be to add them as swatches to the original, but sometimes when I do that, it'll add the edited one as an extra swatch just fine, but it also overrides the original texture as well so they're both the subtler version. I can't find any rhyme or reason as to why it does this, and which ones the issue affects seems to constantly change between game loads.

Is there a way around this, or am I just gonna have to suck it up and use the standalone option? They work fine that way, but it bothers me having what are technically duplicates as a separate thumbnail...