After the update that introduced combat manuals, I started turning lots of my heroes into Combat Manuals.
I did go to the merge screen and simulated merging a manual onto a hero, and it seemed that it would work.
Is it really that way? I was sure I read somewhere they would not be usable for merging purposes.
I'm afraid that that is a bug or some unexpected behavior, and if they remove that possibility... Well... just so many of my GHB units will be abandoned forever.