I'm seeing trigger dependencies being removed unexpectedly from hosts with templated triggers after editing the template trigger.

To recreate:

1. Create template with trigger. Add dependency to the trigger.
2. Create host linked to template. Add another dependency to the host trigger.
3. Edit some non-dependency related part of the template trigger. For example the trigger name, expression or severity.

The additional dependency added to the host trigger will be removed. Only the dependency from the template trigger is present. The expected behaviour is that both dependencies will still be present.