On the discovery for a machine the trigger prototypes have been disabled. However, they remain active at the server even after the expiry time of discovery has passed.

We then wanted to disable the actual triggers, which seemed possible since it was possible to click on "Enabled". However, we then got an error:

ERROR: No permissions to referred object or it does not exist!

This is a bit odd.

1. Why isn't it possible to disable triggers which originate from prototypes?
2. Why are created triggers not being disabled when the discovery (for that paricular machine) has changed?