I traveled with some friends on January 16 - 18, and none of those trips have posted. There were about 10 of us that used multiple trains, including NEC and long distance. All the tickets were properly scanned. Nothing for any of them. Oddly, trips made in January 19 have posted. It might be a processing snafu somewhere at Amtrak.
If your trips were on those dates, you are not alone.