Last week I migrated our Zabbix server (6.0.17) database from MySQL (Percona 8.0.32) to the TimescaleDB (PostgreSQL 14.7.1, TimescaleDB 2.9.3) using pgloader.

Everything works great, and all data is present.

Yesterday I tried to import some Zabbix templates. One of them was PostgreSQL by Zabbix agent and second my template from another Zabbix server.
The import was successful (without any error). But on https://zabbix.example.net/templates.php there is no imported template. If I try to import the template again, I get an info box: "Templates: No changes.".
How can I fix it? It is a blocking problem for me because I need to import some new templates.