hi Lordy
I dont know if I can help but I have used bryce 5 for years and years tell me what it is you are trying to do (step by step) and I will try and replicate the problem, it might be a bug or something.
If you just want to save a set of shapes you like, you can save them in the Create/ Imported objects bin.
Highlight the group you want to save and click create icon and then the bin you want to put it in, then click add and your set will be saved after you add info on it and click save. the finished object can be then loaded repeatedly in all your images.
I hope this helps, contact me direct if you want.