Changing a grade/result for a pupil doesn't seem to stick
If you find that making a change in any of the Admin tools (such as Edit Results) doesn't seem to stick, it may mean that you need to restart the 4Matrix database. For example, if changing a grade for a pupil to an A from a B in Edit Results doesn't seem to apply when looking at Results Overview, and on going back to Edit results, it has reverted back to a B grade.
Your IT dept should be able to do this using the 4Matrix Network Manager Database tools; Set Database Offline and Set Database Online.
This problem may also apply to importing series, in that after completing an import, the new series does not seem to exist.