[Mobhack]

Cross-attatchment can be strange.

If you add a unit to a formation, sometimes it becomes the new last unit in the formation, but other times it can become the new leader. If you have the full game, you can use the "fix formation leader" function to change the leader back to the original 0 unit (the function is not just for when casualties move the commander to another unit than 0).

If you delete a formation and then add a new larger one then if there are formations further up the force, some of the overflow may show up in lists with a gap - the game will put the first 2 slots say, in the freed-up slots of the old deleted formation, and the overflow up at the end. Some lists show the sorted into formation order, others the absolute order in the force. For example - the artillery bombardment list IIRC uses absolute unit order, so a bit of reattaching can produce split lists where B0 and B1 (B1 being x-attatched from down the unit list to add to original singleton B0) may have other fire units listed between them.