Don't lose hope regardless when they will finalize our applications. Its not meaningless, we don't know how the system work.
As IT Guy , my theory about this GU is as follows
1 - There are a lot of applicants was complaining that the test was not show completed for long time although they have passed the exam
2 - When they call the call center , they are telling them it shows completed
3 - When they order GCMS note , they found on it that i shows completed
4 - so i think IRCC knew that there is a technical issue for not showing the updates on tracker
5 - so it push something called overall refresh to every body , where if you have a change in your file it will be reflected
6 - if you do not have a change in your file nothing will happen to you
so at the end , it is just force refresh to all applicants to let the already done changes appears if it did not appear before
that is just a theory of mine