Thanks for the info re watermarking and the links. Re watermarking, would it prevent the overwriting example? If you could do conditional updates via the API t

Thanks for the info re watermarking and the links. Re watermarking, would it prevent the overwriting example? If you could do conditional updates via the API then yes, because you could say "WHERE the record timestamp = the timestamp we have". But if not, the change in System A will be overwritten because no one knows it has changed.