We upgraded from 9.1 to 9.3 and have been able to import/export objects between the two. I know that isn't your exact situation.
We upgraded to 9.3 and are using Open JDK 11 also and are also getting an error.
LDAP authentication error. Anonymous bind failed.
It's interesting to hear we're not the only ones. We'd been on a lower version of Open JDK and were told updating to 11 was the solution. Apparently that's not the case.
Have you put in a ticket with Broadcom?
Sorry to throw this out here, but with LDAP (once it's working of course) can you enable CAS or SAML Protocol or is it even supported ?