Once I had an MBNA Eite Rewards card and wanted to convert to Amtrak card in Septmeber 2004. Those were the days when you could convert Starwood points into Amtrak and then into United. There was no problem and done in a few minutes. Maybe there are certain cards which they are happy to change and others not or maybe now the policy has changed. As mentioned in the above post, I suggest you talk to someone else this time and also let me know because I again want to change my card to something different as Amtrak/United deal is over and I have no use of this Amtrak card.