Using both 3S and a 4S power configuration?

I’ve setup my plane using 3S for most modes. However I would like to use a 4S configuration for the Acro Mode. The manufacturer says that both 3S and 4S using the same props works.

Has anyone tested a 3S configured PX4 with a 4S Lipo without changing the battery configuration/calibration? In the field and without QGC, can one just put a 4S lipo into a 3S configured PX4 and expect a fully functional PX4?

My setup: PQ4 Mini v 1.9.2 with QGC