Those scripts are not right, so I'm not surprised that Tamlen is not actually doing anything.
There are several other critical issues with this modification in the current state, including a pletheora of missing references in the modified .git file. Resources need importing from K2. On top of that, the original m35aa.vis file needs to be edited to account for the added rooms.
With some extra polishing, this will be a great addition to the game.