why? what would magically happen if your ba flights posted on the day as opposed to the usual 2/3 days later?

edit: just to add there is a specific reason QR want their flights to post quickly to their own program - which is why they have another person down the jetbridge scanning bps thereby bypassing the normal slower route. that reason doesn't apply for Ba/baec tho. if i was sat in waterside this would be pretty much bottom of the pile of things to look at since there is no benefit to change it.