Can't use 'move' action to change issue-type (e.g. story to epic)

Using the issue action 'move' for changing the issue type of one of the main issue types coming along with the GreenHopper scrum template fails.

See attached screen-shot.

It works to move from 'story' to 'bug' or 'change request' but not to 'story' or 'epic'.

The issue type change works well using the edit page (action) but since we are also using the "clone and move" plugin this is a major issue for us.