Recently Added folders - strange contents!

[RobA]

Seems I didn't post my reply to you!
1) Time & Date on NAS only 2 seconds different from computer, this resets every 7 days. I forced a sync now NAS & Computer are the same.
2) Check File System done on both Datavolumes on NAS - both ok and volumes in good health
3) MinimServer data folder - files you describe are present (see attached screenshot)
4) MinimServer recent folder - files you describe are present (see attached screenshot). Also added-dates.txt file attached.