I have not taken an Amtrak trip since 2017. I have one scheduled for next year. Since I knew I would not be traveling for a while I donated 2000 points a few years ago. I now have a balance of 764. I thought points expire. Why do I still have them? As I indicated I have a trip next April where I will accumulate a few thousand points. Will I still have the 764 added to it? I do not have the Amtrak credit card.