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.