Same here. My record on XP is 233 days. Win 7 I think was around 190 days. Win10, good luck with that. Though I do have it partially hog-tied
I have noticed a strange behavior though with a Watch Topic. Specifically sorting. It's always been by date and the newest entries have always been at the bottom - until after I did the restore.
Now I have to click-click the date column to re-sort after it's been updated by incoming posts. I thought maybe the file might be mucked up so I just deleted all stored posts. That didn't help. I'm also not seeing as much activity. I removed the two filters I recently added to make sure that wasn't affecting the quantity.
Maybe there's some other file I need to reset/rebuild. Or perhaps just delete and recreate the Watch Topic.