The treasure chest for treasure map X (000F33E0) is buried underground in Lake Ilinalta. I believe this is due to a conflict with the town of little vivec from moon and star.
The treasure chest for treasure hunter map I (43000D63) is buried underground in winterhold. This is due to the winterhold city rework. *43 for me is TreasureHunter.esp
'Treasure chest near dawnstar' (unsure which map) is buried in the entrance to Stuhn Ravine from Vigilant.
Chest base: 09470D3F ref: 09470D40