Please Note - This idea submission is based on base PDMLink functionality and does not take into account SIM or MPMLink functionality.
Additional WTPart View Versions are not immediately apparent in the UI. All mechanisms to find an additional View (e.g. Service, Manufacturing, etc.) prety much require the User to know that the additional View exists. Search works if you know to add a particular View as criteria and the only other way that I know of (even after logging a Tech Support call) is on the History Tab which also requires that the User go looking.
In general, the "you have to know you're looking for it" User complaint presents an opportunity for improvement throughout the Windchill interface however the idea presented for consideration is specifically for aditional Part Views. Ideally there would be a Link presented on the WTPart Details Page that would be both an indicator of the existence of additional View(s) as well as a means to quickly access that View.