Right now, just going through my folder for this trip, I discovered that when Amtrak re-ticketed my trip (downgrading me to coach on the Coast Starlight), they outright dropped an entire leg of the trip (on a date more than two weeks later!) on the Capital Corridor. Am waiting to speak to an agent about this . . .
Edit: And, reviewing the original receipt, they didn't refund the correct amount for the cancellation of the business class seats.
After approximately five hours on the phone - half on hold - over the course of three days, a resolution of sorts:
* Finally received full credit for Amtrak's cancellation of my business class seting;
* Finally had my upcoming travel leg reinstated.
Why do I say "of sorts"? Because Amtrak claimed that my October 22 RIC-SAC ticket was "used" last Mar 24, when I rode RIC-SAC on a different ticket, and that I was a "no-show" on that other ticket.
Now, I always travel with a printed version of my "eTicket", showing my full itinerary, and only use that printed "eTicket" when a conductor asks to see the ticket for scanning. In this case, the RIC-SAC leg was sandwiched between earlier in Mar SC and CS travel, and later in the month SAC-LAX and SC eastbound. I couldn't say whether the ticket was scanned: my experience over the last two (post pandemic) years (on SC, CS, Capital Corridor, San Joaquin) is that scanning is irregular.
I was initially asked to purchase a new ticket since I was recorded as a no-show on the Mar 24 ticket and the ticket for future travel was punched. After it was agreed that I couldn't have used a ticket for future travel in the past a new ticket was issued with the future travel reinstated.