Item Type LOV - Vacation Rule setup

   Is there a time limit for item types displaying in the LOV when setting up vacation rules?  For example, if a user has not had an invoice approval notification in say 30 days, will that item type no longer display as a pick in the LOV? Or, since the WF: Vacation Rules - Allow All profile option is enabled will that specific item type always display regardless of the last time one was received by the user?

Thanks!

Lisa