Steps to reproduce:

1. Create a template with an Enabled trigger
2. Apply the template to a host
3. Disable the trigger at host-level
4. Go to the template and change some trigger properties (Severity, for example) then press Update.

Result:
Host-level trigger has Enabled status again.
Expected:
Host-level trigger status is not altered.

Remarks:

• Zabbix 6.4 hadn't this behaviour
• Templated items have not this behaviour
• It might also affect other triggers fields (I didn't test)