Southwest lowered the fare for the flight I have already booked out of Providence this summer. I purchased the Early Bird Check-In when I bought the tickets. If I call to get the credit for the lower fare, will I keep my EBCI, and if I do, will my place in line stay the same as when I first purchased them or will my EBCI # change according to the date I got the lower fare. The flight times will be remaining the same. Thanks.