Is it possible to merge two different domains to update the user Q&A profiles? (4310372)

Is it possible to merge two different domains to update the user Q&A profiles?

It is not possible to merge two different domain user profiles as each domain is encrypted with its own key and is unique to that domain. Configuration changes that exist in Domain A cannot be merged with the configuration that exists in Domain B as they are not in the same domain instance.

SOLUTION:
Have the users re-register to the new domain to create new Q&A profiles, and re-create any configuration changes on the finalized domain.