Hi Sander Diels
Best if you use the XMP workflow. Align properly at least one dataset -> so that all cameras are aligned, good lighting, good subject clothing etc. When you have good alignment, select all cameras and use the METADATA ( XMP ) tool and export cameras as LOCKED.
Then get the exported XMP files into a good dataset. COPY them to another problematic data ( JPG folder ), load in RC and hit align…