PO receipt location

Hi,

When we enter a PO in the system, we don't know where we are going to receive the order so we put in a general location. When the order is ready to be received the po location is what comes into the po receipt. 

Is they any way to change the location without changing each line? We deal with apparel so we can sometimes have 100 items on a PO, we can't change every line separately. 

Thank you,