Odd export/import message 10.2.8ee


I’m trying to rescue an instance stuck at a very old version due to unwisely being installed with MySQL.

When importing a project exported from the MySQL instance into a PostgreSQL instance of the same version (10.2.8ee) I get this message:

Error importing repository into developers/itlog - Failed to replace priorities because one or more of the new records could not be saved.

I’m wondering if this is because exports from MySQL instances are incompatible with PostgreSQL instances…