Field Won't Change [EP18]

[Targetedandfiring 0]

So I recently switched from Episode 17 to Episode 18. When I was in Episode 17, I had just finished beating Shade in the Power Plant and saved my game there. 

 

After swapping over to Episode 18, I've noticed that my field won't change at all. It's defaulted to Factory Field for every battle. I tested it out by going to areas that have other fields, like the forest in Beryl Wards but it still stays Factory Field. How do I fix this?

 

I've tested out using Misty Terrain on Jigglypuff to change the field mid battle, which works. However, whenever I start up a new battle or Misty Terrain ends, it returns to the Factory Field instead of the intended field for the area.

[Walpurgis 501]

I think this has been reported already. I have no idea how to fix it but if you quote/mention me posting your file I'll look into it and try to come up with a solution.