Custom content and the campaign folder

Seeing E.Noa's post about working with custom content prompted me to think of an isue I'd been having - namely with the use of custom content from within the camapign folder

I'd been using the cobweb fx which works fine in the toolset and in game by simply placing the folder within the campaign folder. Sky textures seem to work fine too. But I'm having issues with some of the other VFX I've been working on - which seem to appear in the toolset, but if i save, quit and reload, they have to be manually reset to make them appear again.

Another issues came with the cliff pack which is a great add on to make cliffs using the core cliff textures in the toolset, but not have them look too stretched. THe beach and the area I'm now working on needed good cliffs and this seemed like a good solution. Having no experience with 2da editing, I played around, got the MotB placeables 2da, added the relevant lines from the clif pack 2da to it, imported them into the game with the data files in the campaign folder - found they all had the wrong appearance (I'm guessing because the 2da entry lines were different), so manually altered the appearance to the correct ones which were in the drop down menu - et voila - i had cliffs in the toolset! .... but not in the game.

So has anyone experience with using the campaign folder for CC? I wanted to keep the install simple i.e. mod file and camapign folder if possible, but I guess override/hak is an option. But anyone have any ideas?