Issue Description: In the Edit Assignment screen, when an assignment is unavailable, SafeAssign options cannot be turned on. If the options are checked, the check boxes will be unchecked when the page is submitted. When an assignment is made unavailable, if the SafeAssign options were previously checked, the check boxes will be unchecked when the page is submitted and it will be treated as a deleted SafeAssign submission.
Workaround: Do not uncheck the box next to “Make the Assignment Available. Availability can still be limited using the Display After and Display Until options under “Limited Availability.”