I've done a bit of digging since my earlier post https://moodle.org/mod/forum/discuss.php?d=259922
and found that the grades are in an overidden state indicated by the orange. (2.5+)
1. Is there a way to undo this in bulk for an assignment or a number of assignments and students?
2. How do I disable this 'Over-ride' setting for future?
I have database access, if it comes to that...