NHF – new heroes for Heroes V 3.1.

So, on maps with many towns, the Necropolis's magic will be off the charts?:)
Okay, never mind, I'm more interested in this: let's say I've moved quite far from the castle, and there's no portal to the town yet. Suddenly, our "nasty guy" pops up out of nowhere, converts my town, and runs away. If I take the town back, I'm left with a Necropolis that I don't need (assuming I'm not a Necromancer)?

It's quite vague, and it will be difficult to distinguish, as it is calculated at the moment.