12000XP Instability After Time Change

I had an EG4 12000XP installed at my house on October 13,2025.
I had the 12000XP programmed for time of day charging, between 12:30AM and 8:00AM EDT. It had been working until the evening of October 21, when I noticed that the charge time was starting at 11:30PM, instead of 12:30AM. I examined the 12000XP Station Configuration, and noticed that the time zone had been set for GMT-4 and Daylight savings time was set to Yes. I changed the time zone to GMT-5 and left the Daylight savings time set to Yes. This change was made shortly after 12:00AM on 10 removed link

At about 6:00AM I noticed that the inverter had not switched to the charging mode. When I inspected the graph, I noticed that the inverter appeared to oscillate, with the charging rapidly switching on and off, between about 12:30AM and 1:00AM. Then the inverter stopped charging, and the battery depleted down to the 15% cutoff. Then the inverter switched to grid power, where it remained the rest of the night. At about 7:00AM, I clicked on the "Start Quick Charge" button on the EG4 Monitor, and the inverter began charging. I called David Kline, and he suggested that I try scheduling a timed charge during the day, to verify that it would work. I programmed a couple of timed charge schedules for the afternoon, and they seemed to work OK.

I think that the 12000XP failed to switch to charging mode, because I had changed the time zone after midnight. What I am concerned about is the apparent unstable oscillation that occurred between 12:30AM and 1:00AM. The battery SOC seemed to jump up and down rapidly, indicating that the inverter may have been switching a large charging current on and off. I have attached a screen capture of the EG4 Monitor Input & Output Power graph that shows the anomaly. The picture includes two graphs, one showing the full day, and the second showing the morning up until about 7:00AM.

I just updated the time settings to turn off Daylight Savings Time.  Again, I noticed an apparent instability in the 12000XP input/output graphs.  Am I doing something wrong when I change the time settings?  Do the time settings have to be done in a specific order?

Thank you,