Comment 4 for bug 1100444

@Sean: Yeah, looks like it. I think there are some cases that need to get a deleted flavor (e.g., if it's still referenced by an existing instance). But there's no way to tell the API to exclude it when retrieving a flavor by id, and it would seem there's also no way to tell whether an instance is tied to the new or old flavor if IDs are the same.

I'll ask openstack-dev.