We use the "Allow another attempt" option with Assignments.
However we have need to edit the feedback of a previous attempt made by a student.
When "Save changes" is clicked by the teacher. The error "The grade changes were NOT saved, as it was not possible to determine which submission they were for." appears.
The error code was useridlistnotcached.
Has anyone else come across this error? and if so, how did you deal with it?