3ds Max: merge animation

When I merge an animation stored in an identically rigged model into another file, the animation merges fine but I get duplicate dummys in offset positions. Seems for some reason it's merging helpers from the target file.

Also, although the objects wired to the sliders have merged the slider animation succesfully, the sliders don't respond and their curves don't show the imported animation.


Anybody can help with this?


Thanks