Password Manager: Importing from V2 to V3 only imported 1 login from each account

[HeinrichS 3]

As the title says. For example: I have dozens of Google logins on V2 and it only imported 1 of each account into V3. It's the same with other websites and apps where I have multiple logins. Luckily I exported in all formats, including text, but it's a long process which I hope to solve differently. V2 had an account with different login possibilities. Is this no longer the case?