What Happens to Tags When a Linked Model is Unavailable?

Suppose you annotate a host view and tag elements in linked models. If the linked model later becomes unavailable, the tags may or may not persist, as follows.

When the linked model is... Tags for linked elements... When the linked model is restored, ...
Unloaded or missing no longer display in the host view. tags for linked elements display in the correct positions.
Removed or deleted are deleted from the host project. tags must be reapplied to linked elements.