[MrChainsaw]

What do you mean the old programming codes...the MDN and MSID? They will not stay the same. The Lock code (or MSL) will stay the same, but the MDN is the actual phone number that you are putting on it, and the MSID is another number specific to that line of service. If you did not get those from Sprint when you called in to do the switch, you need to call back and get them. Obviously you know what the MDN is, but you'll also need the MSL and MSID to reprogram it. Does that make sense?