Firstly, I can see from your xlogfile.txt that you are connected to a Huawei DSLAM:-
Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3971)
Medley Phase (Final) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3971)
Secondly, I see that your DSLAM has adjusted the band plan already.
Prior to these firmware updates, the Huawei DSLAM band plans were:-
Discovery Phase (Initial) Band Plan
US: (0,95) (868,1207) (1972,2783)
DS: (32,859) (1216,1963) (2792,3959)
In other cases & in my case, the DSLAM band plans were revised a few days before the modem's firmware was updated (6 days in my case).
Are you able to track backwards to determine when your DSLAM band plans were revised?
If using HG612 Modem Stats, which it seems you are & if logging 24/7, the change will probably be registered as a Retrain Reason 2 RESYNC in the Current_Stats folder.