Hi Mark,
Please contact support (support@serlio.com) with the following information, and we'll dig into the issue:
Serial number and the version of CaseComplete you're using (see https://casecomplete.zendesk.com/entries/20466101)
Screenshot examples of requirements' references before and after the move - or, if it's possible, zip up the project working folder and send it to us (we'll keep it completely confidential)
The specific method you're using to move the requirements so we can reproduce the problem.
Thanks!
Jason