Custom Mods Overriding Each Other

[Jocunda]

I've been working on custom face texture mods. So far I've successfully done Alistair and Blackwall and they worked just fine. Now when I try to change any of the others, go to merge they all say they override each other.

 

I was under the impression they were all unique files and a Cullen diffuse couldn't override a Cassandra one and vice versa. I've had that problem before when more than one mod uses a certain complexion, but every other mod I create for the squad members just doesn't want to work.

 

Any help would be appreciated! Thanks!