Import misses repository / merge requests

I’m exporting a project from a private instance running 8.14.4. When importing into I get the issues but nothing else:

A messages does come up if I keep the import running, am running it currently to get this as it’s inaccessible once navigated away from.

Edit – Attempt 1

Failed to replace merge_requests because one or more of the new records could not be saved. That attempt got issues.

Edit – Attempt 2

Another attempt has just failed with the following message:

Validation failed: User already exists in source. No issues managed to get imported this time.