I added the new fixture profile to the scan library and did as you instructed; several things went wrong. I went to the patch manager, deleted the 2 fixtures and replaced them with the newer profile. When I clicked ok, I was asked, do I want to update the buttons, I selected yes. When I look at the fixture page, nothing has changed. My saved scenes are still listed, but when clicked, do nothing. I checked the DMX output windows and there is no DMX output.
For testing purposes, I added a new fixture using the new profile and the changes you added are present.
I restored my show file. Can you suggest anything else?