campaign trigger or something like that

[Just Another Dude]

After finishing the first map (or chapter), your hero is supposed to keep all items gathered from the last map. This includes all tomes, consumables, and of course, the exp gathered. How can do this?

 

[tulee]

A game cache is used to transfer over those things in campaigns.

Bob27 made an introductory tutorial for game caches. It is very good at explaining the basic idea behind them.

Game Caches

 

[IcemanBo]

A concrete example Moving a unit through two maps with the same coordinates