These forms both behave as expected regarding saving, editing, viewing and adding to the SharePoint List. When I click 'Edit All' built in buttons, the screen changes to the Edit Screen, and the Built in Buttons change to 'Save' and 'Cancel'.
However, when I click 'Save', it changes back to the View Screen (I removed 'RequestHide()' as didn't want the user to have to click back in each time) but the SharePoint Built In 'Save' and 'Edit' Buttons remain instead of changing back to the 'Edit All' button as it should. You have to close the screen to reopen the item for it to revert.
Inside the SharePoint Integration I have the 'OnSave' set with the following: