As far as I know the cprs contain the code for all panels so if you install one that doesn't have the code for a particular panel in the cpr it will remove it. Any of the ones I have posted are set up for everything except Opera I believe. If there is a certain one you are trying to use of mine let me know and ill do what i can to make it work for opera or any other panel.

Edit: Just to investigate I installed the opera favorites panel on top of the custom font and it wiped out everything I had on my today screen. The worst part was that the panel did not show on the home screen nor in titanium customizer. If someone who has the opera panel working on their phone can post the cpr's ill try and figure it out.