Unfortunately PhotoLab loves to save absolute paths for a bunch of different things and until today no efforts, that I am aware, have been done to fix that
I hadn’t realised that before. Usually, with the sidecar files I have been able to move folders to my archive storage without all the rendering settings being lost.
So seeing it happen with the colour settings was a bit of a shock.
Losing the info was one thing, but no warning / attempt to re-connect was surprising indeed.
I hope reconnection will be allowed in the future, but from what you say that is unlikely.
It happens with the functionalities that require an “external” file. There is, if my memory is good, one or two exceptions but the majority is problematic if you move the “external” files around (not the raw+dop on the same computer, this will work)