Not dynamically if you mean that, no.
An older CK2+ version had a Iceland with "no character" as holder until it would have been colonized, but the system was bugged. And AGOT seems to circumvent the problem by having fake characters such as "Ruin" to hold the supposedly empty provinces.
So no, there is no known way to properly make provinces into wasteland or vice versa dynamically, only crafty workarounds.
Did you make your own mod (as opposed to editing vanilla files), and activate it?
Forgive me if this sounds obvious, but I tend to begin with asking the easy things first ^^
I didn't create my own but I do have some downloaded off the workshop but none of them affect religion. I noticed my save games are not in the default save folder but in a folder named after those mods. I turned off those mods and now the changes I made do work it seems like 1 mod that gives a custom trait is messing things up.
Thanks for the help