Migrate AnsPress database from one domain to another

Our company currently hosts a Q&A through AnsPress on one domain. We need to move it to a different domain.

We’ve tried a lot of importing and exporting, but haven’t found the right steps needed to migrate the entire database, maintaining linkage between questions and answers. We feel we have exhausted all suggestions from Google by now, so here I am.

Has anyone done this succesfully before, and how?