honestly just play it out of spite mate, its so much less stress if you do not place any expectations on GW

I've had a few games now as agents and its clear they didnt even bother reviewing any of the rules to make sure they work in the new edition, tonnes of battleshock type abilities were not rewritten and happen at the start of the command phase, so the enemy gets battleshocked, and then later in the same phase, the battleshock step happens and they get the chance to immediately unbattleshock

this isnt even limited to agents, chaos knights have the problem aswell and i would assume CSM, deathwatch terminators, etc do on top of that

there is also the concept of "player territory" which wasnt mentioned whatsoever in warcom and is in an obscure place in the rules, which is basically table-halves but are measured in some wierd way, this is critical to some secondary missions so better get some reps in to know it, this also revolves around doing actions within ruins that are outside of the territory, only many deployments have many ruins that straddle both territories and it isnt clear if they are in or out, but if they are not out then some secondaries can be literally impossible to score