Change Type to Multipart FIxture

Hi,
Ok simple enough scenario.
I have a show programmed with CMY fixtures..i arrive at a festival and they have CMY fixtures that are patched as multipart
01 x Master/03 x Cell/01 Aura.
So I now have a few choices either change type to the master and keep the Pan/Tilt/Intensity information of my show,
change type to the cells and keep the colour information or change type to the Aura and gain nothing an lose all programming.
There must be a better and more straightforward way to keep the integrity of programming intact at this point even if it is within the patch/change type so that you can allow the console to group multipart fixtures and for the console to see them as a single fixture?
Who wants to reprogram an entire show to use a fixture in extended or multipart mode and gain nothing.

That's all,
C