Beyond Reality removes existing corruption

When using beyond reality running a map with a boss and existing corruption has a 30% chance to remove the corruption on entering the map. This keeps making my maps that should be lv 82 only lv 81 and no corruption monsters spawn.

And when it adds corruption to a normal map it doesnt increase area level. Just happened.
I have to double check tho because i'm using Corrupted Infusion too which may turn a t15 in to a t14 and if beyond reality is working then area level stay like it was a T15.

Edit: Definetely working. T16 on only irradiated boss map so lvl 81, added corruption and it went 82.
So if you are using corrupted infusion too that might be the reason of downgrade.