Retaining Sims genealogy when importing a family from gallery?

"Garfieldwxg55;d-1002679" wrote:
Hi, I just was transferring one of my old families from CAS, and I noticed that all of their familial relations were deleted. Is there any way I can fix this, and keep their relations? Many thanks :)

No. You cannot. Unfortunately. :(

The only way is to either try to remake it in CAS by switching them around in 'households' and altering it with cas.fulleditmode enabled, or using a mod like MCCC that you can add or remove a relation.