OK, been looking through the forum for the last few days and have not found anything like what I am having trouble with.  I am hoping someone out there may be able to help me figure this out:

I am working on an animation (I usually am), and it was started with Poser 4 + Pro Pack (as I was intending to render out through lightwave, but could never get the plugin to work properly).  I recently upgraded to Poser 7.  I have tried to import this scene (about 240 frames in length) into poser 7.  In the scene, the main character is swinging a sword, with several "fire" objects parented to the sword that "ignite".  It all worked smoothly in pro-pack, and I wanted to use the better render engine of Poser 7.  The problem is, the sword prop and the flames all lose all of their movement data when I load the scene into Poser 7.   In the orriginal scene, the sword is parrented to the right hand of the main figure, the flames are parented to the sword blade, and several lights are also parented to the flames.  I have reloaded the scene into poser 4 Pro, and it still works properly.
Does anyone have any ideas what may cause this behaviour, and how to fix it?
I have already installed the SR3 update in hopes it would fix the problem, but no dice.