We are having issues running data integration scripts once products have been added to a family. Before being added, re-running the import script will update them fine. However, when they have joined a family, we simply get a PK dupe error and the script fails and nothing is updated. I have tested various options such as the "Use existing Product Id found by Number in Variant Products" option, which sounded promising, but it had no effect.
Any theories?
Cheers
//Steve