Question about truck deliveries

So my store recently got switched from QCCFL to QCCGA which also meant our delivery days changed from Mondays and Thursdays to (supposedly) Sundays and Wednesdays. I’m thinking it’s because it’s so far from QCC and we’re probably the last stop on their route, but we’ve had three deliveries with this new change and they’ve all still been delivered on Monday and Thursday. Why would they switch our QCC from being 2 1/2 hours from my store to now being 4-5 hours away (depending on traffic)?