[Rules] APC's in assault?

[enrique]

Hugmenot says:

"Another possible strategy is as follows:

Turn 1: Loaded APC (with passenger) moves next to enemy units.
Turn 2: The APC and the transported unit conduct a move action to unload. While the enemy may NOT conduct Opportunity Fire against the unloading unit, they can use Direct Fire against it when they activate.
Turn 3: The APC and the unloaded unit conduct a fire action and assault the enemy."


In my opinion there is a mistake in the action of Turn 2. According to 4th edition rules, it is possible to conduct Opp. Fire against an unloading unit:

"Although it does not involve moving to a new hex, voluntary loading/unloading (5.61) and limbering/unlimbering (5.63) may trigger Opportunity Fire" (Rule 13.3).