Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Mods Removing purple AI tiles

I've been working on a mod for a while and just noticed a small spot of 20 tiles or so have become purple. I say become because I don't remember painting them purple. It looks like this indicates "block".

I tried painting them with allow. I tried right clicking with block to erase. Still purple... I tried removing the items from the area and regenrating the AI. Still purple...

Anybody else ran into this? Any suggestions? I guess I could delete my AI folder but I'd rather fix it from the editor if I can.

I got them removed. I had a lot of items in the area. I just had to change the property for WalkThrough to "True" and I was able to remove the purple tiles.