Integrate external solar strings output

[AG7GN]

Thanks for a great dashboard!

Last week, I had a PowerWall 3 and Gateway 2 system installed (firmware 24.28.201), as well as a new solar string connected directly to the PW3. I already had 2 PV strings with built-in APS Systems DS3-S microinverters. These 2 legacy strings feed power into my main load panel and over production is sent to my provider. The PW installers installed a CT on the 2 AC outputs from my legacy strings. This CT is plugged in to port CT1 on the gateway. The Tesla app correctly reports the aggregate solar output from my legacy strings and the new dedicated PW string. However, the dashboard only reports output from the new dedicated string. As a result, when the sun shines my home power consumption shows negative:

while the app correctly shows all solar output:

Is there a way to extract the CT1 output to account for the legacy arrays output and integrate that into the dashboard? I'm new to Grafana and Influx.db, but I'm very familiar with Linux.

Thanks again for a great dashboard.