If I have misunderstood how Update Scanner is working, I apologise.
I would like to know what changes there have been to a page since the last time I reviewed changes to that page. Update Scanner may have scanned 2 or 20 times since I last viewed the changes and I want to see all changes since my last viewing, not only changes since the last scan.
Re: Changes Sincs Last Viewed Not Since Last Scanned
That's how it works.. although it's slightly more complicated. For example:
1) Changes viewed
2) Change 1 detected
3) Change 2 detected
4) Changes viewed. Change 1 and 2 are highlighted
5) Changes viewed again. Change 1 and 2 are higlighted again.
6) Change 3 detected.
7) Changes viewed. Only change 3 is highlighted
So don't worry about "losing" changes if you don't review them immediately.