If you are updating or upgrading this mod, I recommend the following steps:
1) Make certain you remove all equipment/items from Lamae's Rest (the Player home).
2) Leave Coldhaven (I recommend going to Ivarstead).
3) Wait 24 hours in game.
4) BLANK Coldhaven using the MCM or Config Power. see note below ...
5) Make a New Save (not a quicksave).
6) Exit the game.
7) Uninstall and Delete the old version of Coldhaven.
8) Load the saved game from Step 5. see note below ...
9) Make another New Save (not a quicksave). see note below ...
10) Exit the game. see note below ...
11) Install the new version of Coldhaven.
12) Check/sort your load order.
13) Start Skyrim and load your save (from step 9).
IF you want to update and still keep all items and quest progress then you can try skipping Steps 4, 8, 9, 10, but then wait outside of any Coldhaven cell (like Ivarstead) for 30 days so all cells will reset.