I've just loaded the happy expedition party from Barcellona to take MAllorca on the whim (

), but I notice that EACH ship of the amphibious TF has embarked a fraction of EVERY land unit, (I would upload the screenshot if I remember how to do it in this forum) and if I recall well, this did not happen in WITPAE, where each ship tried to load the whole unit first.
This is a major detail for naval operations of the kind.
I wander if this is intentional?!