Originally Posted by
FlyingFreeYupie
...Still, whenever I am re-routed with a partner, United has always booked me on regular economy (1 bag included) with the partner even though I sometimes had a basic economy ticket. ...
If the partner has BE, it may be it was just easier to rebook the regular economy, it had nothing to do with the bag allowance or credit card. Purely an ease of rebooking.