As I understand it, Amtrak tickets become refundable if Amtrak cancels your train. Before I follow up with them, I just wanted to see if my understanding is correct, given this somewhat convoluted sequence of events:

1. In December 2021, I purchased a ticket for a one-way journey in January 2022 using my credit card. This original ticket was non-refundable.
2. Later that month, I changed the ticket to a week later, which required an additional fare collection that I put on the same credit card.
3. In January 2022, I changed the ticket again, this time to February 2022, as an even exchange.
4. Later that month, I changed the ticket once again, to April 2022. This actually resulted in a fare decrease, which was issued to a new voucher.
5. Finally, in April 2022, I changed the ticket one last time to this month. The new price was the same as the previous higher price, so I applied the voucher created on the most recent exchange.
6. Then, Amtrak canceled my train two days before departure, rescheduling me on a later train. At this point I'd pretty much given up on this trip.

Online, the only option was to refund to a voucher, though the full amount without any penalty was offered. As I didn't want to no-show for the later train I wasn't going to take, I went ahead and canceled the trip. The voucher says the "Refundable Amount" is $0.00. It also says the expiration date is Jan 28 2023, which doesn't make sense since "An eVoucher will expire one year after issuance". I guess it picked up the date from the decreased fare at the end of January?

So given all the above, can I expect Amtrak to just refund the ticket, or at least reissue a voucher that's good for a full year?