Yes, but what’s the point with respect to the original question? Just always follow one of the tables in ConfD 6.3 UG “28.5. Starting ConfD”. You will always register in phase0 everything that may be needed for the upgrade, if there is one. If there is no upgrade, no harm done, and you have a clear and straightforward startup procedure that you always follow, instead of a complex one with conditions and alternatives, making testing harder and errors likely to exist.