I had both connected and ultimately it was the flip of a coin as to which one was assigned as "Inverter 1". It actually changed between reboots. In talking to SA about it, at some point they're gonna add the ability to map which inverter is which, but there's no ETA. Since most of the settings sync (with a few exceptions), it shouldn't matter which inverter you're making the change on because they will propagate.
I had both connected and ultimately it was the flip of a coin as to which one was assigned as "Inverter 1". It actually changed between reboots. In talking to SA about it, at some point they're gonna add the ability to map which inverter is which, but there's no ETA. Since most of the settings sync (with a few exceptions), it shouldn't matter which inverter you're making the change on because they will propagate.
There could be potential differences in how the inverters handle the change because we are talking about different firmware between the 6500 and the LV6548.