Originally Posted by drogyn1701

It shouldn't really unlock them for you unless they are already working in the Foundry.

For example, I imported a character of hippiejohn's from the main game - a costume from one of his boffs - that is wearing the Kirk TOS wraparound shirt. That shirt isn't available in the Foundry, so the when I imported it replaced it with another one that is, but with the same color scheme. However, on the costume creator buttons on the right, it said it was the wraparound shirt. Click on that button and it looks like all of the costume options are available, but try selecting them and it doesn't work. At least not for me.