Hi,
I'm currently migrating from KC13 to KC26. KC13 uses dev-file as database and kc26 uses Postgresql.
I was able to import the realm (with groups) from old to new KC. The users are all in LDAP and that works all fine.

But the group membership of the users hasn't been migrated, which makes sense. They are stored in the KC database.

Is there a way to migrate the membership from old to new? Do I have to assign the group membership for each user? Is there an API call to make my life a bit easier?