Relaunch help needed

Hello everybody,

question: my old page, which is still live, has a domain name (e.g. abc.com). The test environment, where the new page is, is at e.g. xyz.com How can I use the old domain name abc.com for the new page and then rename the individual URLs of the test environment (where the new LPs should be, because the current test environment URLs are not named in an optimal way)? I am worried about creating a 301-redirect-mess…

Thank you in advance.

All the best,
Christian