Similar to my Nextcloud difficulties, I have also been having difficulties with our custom private Ark servers since the release of Aberration. The original servers with The Island and Scorched Earth are still working fine, but I wanted to add an Aberration server as well.
Unfortunately, although the server was working fine, we were unable to do any transfers to or from the world, related to the other systems.
After several rounds of tech support with the service, I finally managed to narrow it down to a clustering configuration issue. Although the servers were configured to be clustered, they were not logically clustered and did not have the right IP ranges. After identifying this to the support team, they were finally able to correct the issue. And it managed to be fixed without any lost data in the existing worlds.