For Dynamics 365 (CRM) Update 2.1, the Bulk Edit forms no longer use the form that you were last on. They now only use the first form in the form order. This is a bug and quite a big issue. I have had many colleagues and friends express concern over this because if you use multiple forms, you may not have one form that can be used to bulk edit. Forcing a user to use 1 form to bulk edit now is a BUG and needs to be fixed.