3ds Max Animation :: Errors Saving And Loading Biped Animations?

I'm working on a project where I need to duplicate all animated sequences for both a male and female character. I currently have two biped rigged characters. I animate one, save the .bip animation file and then load into the other. I check the boxes for "Load max Objects" as I have some objects (like a glass of water) set as an IK pivot object. It loads those into the new scene along with the new pose, but the pose goes wrong, thought just with the arms (which are incidentally the only parts that have a seperate object as an IK pivot object.)
 
Here's a screenshot to show what I mean:
 
This incorrect animation happens whether the .bip animation file I save is loaded into the other character or loaded into the same character in it's original T-pose.