Did you reapply her rigging when you brought the mesh back into Poser? I think I know where part of the problem may lie.

If you did that, could you explain that step by step how you did it? I know I've made the mistake of auto grouping in the pose room, then clicking 'yes' when Poser asks if I want to automatically group the new figure with the new bones. It doubles the grouping names.

If you look at two identical meshes side by side where one was auto grouped in the pose room and the other grouped in the setup room, you will see differences in the grouping.

This may have caused your problem.

If I had a nickle for ever time a woman told me to get lost, I could buy Manhattan.