Discussion about Heroes 4.

The entire trick of dragging hero graves was described more than 10 years ago on a forum.

There is also some good news. "Afterlife Journeys" is clearly a bug, and the developers have mostly removed it from the game. And, if desired, it is prohibited by the rules as an uncorrected bug. However, things are a bit more complicated with the third (and fifth) part, as the line between a couple of characters delivering reinforcements to the front and a full-fledged chain operating across all fronts is essentially blurred. And due to the specifics of the game, troops in the field cannot be delivered except by another hero.