Ok guys i made a  test and it's not looking good.

I loaded the character who  has the dress on from my libraries. The dress is conformed perfectly and works. 

Then i deleted the character and left the dress on.

Then i loaded the character with the dress again. now i have 2 copies of the same dress. One conformed to the character, and the other is not.

The one conformed on it already looks great. 

1. Hide the conformed dress
2. Conform the other dress to the character.. 
   and GUESS WHAT??? It doesn't conform!!!!!  body parts come out.

So, what's going on here?

By the way i'm using WW1 because WW2 doesn't do well with this dress.

But isn't it kind of weird that the dress doesn't work