deja vu? File date change

Yes, been here before. Branding (or assignment to workset) caused the DGN file to change it's modified date even if nothing was done other than opening. I use the modified date, it's good information for me. When this happened the first time, back in CExx, I set-up a batch to open every file in my active projects (100s) so I could track them going forward.

So now it's doing it again (has been for a while). In addition to the ridiculous amount of bugs and defects, this is just annoying.

Why Bentley, why?????????