NHF – new heroes for Heroes V 3.1.

Hello everyone, I'm new here, and I wanted to know if it's possible to have both new heroes (unique ones from NHF) and old ones (+ ALL from the campaigns) available for selection. Or will NHF prevent any attempts to make, for example, Agrael available, since he was removed in the latest version?

And also, will the additional models for 0.85 work with 0.86, or should they be removed?