Leezone,
I ran into this issue too. What I now do is rename a style I am using for a registration and save it as a USER_STYLE. Each registration has it's own separate style so I can make what ever changes I need to any of them.

Not the easiest solution but it worked for me. As a side note - I have stopped using registrations and now only use styles. I had a real shock when I loaded Ketron's Gold Package and when the voices loaded they moved the location in each folder of all the voices I was using. When I brought up a registration many of them had really strange voices in them and I had to go through every registration and style and revoice them. This was before AJ let us know we needed to put numbers in front of all the user_voices to keep them in proper order.

Deane