Combat with Ghosts on Abandoned Mine, Shipwreck and mine with Haunt spell

[LeHerosInconnu]

In the case of the Haunt spell, the number of ghosts is conserved over the course of the combats if the first combat is not won, and it can therefore increase or decrease if another combat is started on the same haunted mine.
This is not the case with Shipwreck and mine with Haunt spell in the original game.

I'm not against the idea that the number of ghosts evolves over the course of the combats.
And I was wondering if this working mode should be offered as an option because it is different from the original game.
Something like this:

"world: number of ghosts is memorized at the end of a combat not won in the places concerning them"

This working mode could eventually be extended, with a separate option, to other places on the adventure map like the Graveyard, Dragon City, etc.
Something like this:

"world: number of creatures is memorized at the end of a combat not won on places with guardians"