animations lost?

Ok im making a basic game, i modeled he character in one blend file, then brought all the props and landscapes together in one new file.

But whenever i bring in a rigged character, some of the animations may not show up, or get messed up entirely. Like the walk animation could get duplicated and make a Walk.001 and Walk.002 when in the original .blend file there was only a single Walk animation for the rig.

I put the rig and model into a group then appended them to the new blend file where the game is taking place.

I hope that theres a imple fix to this please and thanks.