Links for test domain in editor?

[Sonya*]

We have right now a project that is not online yet. The live domain runs another CMS and will be replaced soon.

The new content is now entered by team members on the test server, that runs IPS already. Team members set "internal" links in the database entries e. g. to contact page, calendar and so on. The issue we have: there are tons of links now that have a test domain instead of live domain. Like: text.example.com/contact instead of www.example.com/contact. The team members link what they see on the test server, additionally the pages with the same URL do not exist on the live domain. 

Is there any solution of how to replace ALL links to test domain set in editor by the live domain. It should happen at the date we go live. Any idea?