Hi rolfschmidt
the system was installed in 2018_03 as Zammad Version 2.x with MySQL.
and migrated many times to new Debian Versions (with Backup and Restore) and migrated from MySQL to PostgreSQL.
Database -migration was done before zammad announced the migration Infos:
so I wrote my own (2021_10)
and here the output of the command
zammad run rails r "pp Store.where(\"o_id LIKE '%.0'\").count"
114844