I am trying to migrate our 2.4.58 Openldap (LTB on CentOS 7) to 2.6.9 (LTB on Rocky 9).

I slapcat'ed the config DIT and data DIT and I am currently trying to import them into the new installation.

I have removed ppolicy schema and tried to slapadd, but it fails: 
...

For your reference, here is the file being imported (as is, passwords removed):

https://pastebin.com/nWHGsexp

Best Regards,
Nick