Yes, it did give me a overwrite warning. I went ahead and saved over it but it would not load with the changed pose. That was what was confusing me originally. Almost the same thing happens with props, if I resave a prop then two of the props with the same name show up ( just two different change dates). I've just gone and saved them under different names and resave themagain under the name I want.  I'm not sure if anybody else has this problem, but the go around by renaming it works.