The maya exporter does not appear to work correctly with mirrored bones. Can anyone confirm this please?
I've been unable to find a windows collada viewer that supports the latest format, so I'm only testing this with my own viewer currently.
I have, however, seen the exact same thing before, with the same model. This was when I was writing my own maya exporter, there was a bit of extra code required to handle mirrored bones.
I was hoping there was maybe an inverted scale or something that gives the hint, but I can't find anything in the maya export results that show this.