Yes, the same with 1.3.2 (using a 1.3.1 save before the first battle ends). Only corps officer, not for the brigade/division one.
I prefer if they get it, to don't stop the progression of the corps and brigade/division officers (and the need to rotate them as regiment officers to get exp).
I like to promote good officers over the campaign (traits works good here, and some random exp boost for some officers could be a good idea), but also I like to have some commanding brigades/divisions from the start without loosing exp potential (or having a specialization specific reward/trait for brigade/division and corps officers, doing them better commanding at the level they did previous battles).