Use the Background plate tab on the right hand sidebar to select which version of your frames you wish to edit.  If you want to export/make movie the rig removed frames from SMP, make sure you change the default option to Stored plus Full resolution.


NOTE: It is also important to know that if you set the Background Plate Type to "Stored plus Full resolution frames" so your changes can be exported, you must make another change to see and playback the rig removal images in SMP.

Go to the View menu.  Select "Captured Frames" to view the rig removed /  Painted frames.