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.

I don't think it's a universal problem.  I just tried a quickie.  Posette with a box
parented to her hand, the arm moves and the box moves during the animation.
Saved the file, re-opened in P7, and the movements are still there.

The only thing I can think of at the moment:  Did you save the PZ3 in compressed form?
Possibly the GZIP has changed between versions...?

Also, you said you "imported" the scene.  Did you bring it in through the
"File: Import Poser Document" choice, or by File:Open in the usual way?

When I said imported I simply meant loaded, as it is not the same version of poser it was created in I refered to it as importing(old habit).  It's not a universal problem, as I do have other scenes with props that work just fine when I bring them into poser 7.  It seems I have had nothing but bad luck with poser from version 4 onward.  I always get strange behavior of some sort...with poser 4 it was the rendering engine causing bizarre artifacts all the time.

Interesting.  Can you show a picture of the setup in P4?  Maybe it will
give a clue.

A pic of the hiarchy window or just of the overall setup?  either way I can get one by later tonight, I have that machine rendering a lightwave scene right now.

Both would be helpful.  The scene in preview mode and the relevant
part of the hierarchy.

Ok, I'll grab those later tonight when that machine is free again...I'll also grab a screen from P7 preview of the same file showing where the props are not interacting how they should.  I'll post those as soon as I can.

Sorry it took so long to grab these, here's the first image cap, and I'll post the next in another reply (it will only let me attach one per post it seems). The file itself is storred in PZ3 (that's how I store all of mine, due to problems I encounter with other software using PZZ). Both Screen caps are from the same frame of the sequence with the hiarchy window open.  I did notice that Poser 7 renamed the sword slightly, so I am thinking it might be a naming issue behind this odd glitch, I will test it later by renaming it in Poser 4 Pro and resaving before loading into Poser 7. I have tried a number of fixes, including reparenting the sword, replacing the sword with the parented sword from the library, and resaving the scene out of Poser 4 after insuring it was still intact and not corrupted.  It works fine in Poser 4 Pro, which was what I originally authored it in, but I was hoping to update and enhance the scene, and render with the improved raytracer of Poser 7.

Here's the cap from Poser 7...as you can see, the Everything else is where it should be, except the sword. Okay, well they aren't exactly the same frame, but they are in the same range, and illustrate quite well the sword is not moving, and the flames have lost their animation data too.

Just to show what I am working towards, here is a very old render from Poser 4 Pro prior to many of the later adjustments on the figure and the light.  I really want to get this to work in Poser 7, as those flames will look so much better with enhanced ambiance, luminosity, and animated fractal-transparancy from the advanced materials room.

That's a pure puzzle.   The renaming is interesting, but maybe irrelevant.
The sword is complicated, with all those flames and waves on each flame,
but Poser usually handles complication OK.

You could save the sword motion by itself*, *as an animated pose in P4,
then apply the motion in P7.  Or save the sword plus the waves.

I just got P7 Thursday and been playing around with it.

I find P7 way different from P4
Good Luck..I'm no help sorry.

For some reason, when I try to save Props with animated poses it has never worked.  However, it is most likely moot, as in the P4 scene, the sword has no real inherent motion of it's own as it is parented to the right hand, and moves with the hand.  I will probably try to keyframe the sword next, and see if that has any effect...but the flames losing their motion as well is really disturbing me, as they are loaded with keyframes to get them to spread down the blade, and flicker (hense all the waves and magnets).  I did spend some time setting this up when I was using the Poser 4 Pro Pack and really do not want to have to go through that ll again.  I decided to ask in these forums as the help I received from Tech support was no help at all (they essentially told me to recreate the scene from the ground up in poser 7).