Thanks, he definitely used Watchpower, how I understood it, Watchpower generates a binary log file that he sends to MPP for analysis.
On Wednesday something took out the power for a second and caused the batteries protection circuits to kick in (maybe six out of the eight batteries), or the batteries protection circuits kicked in and took out the power for a second, either way I was running the entire house on two batteries for maybe a day.
When I figured out I was chewing though battery I now think I turned off the only two working batteries on Thursday night (the Aeon isolator switches are confusing, does ON signify ISOLATION ON, or POWER ON), when all batteries were turned off there was definitely a 1 second outage. So the inverters cant do a quick switchover to grid if the battery power is instantaneously removed.
Also the installer reintroducing battery power to the inverters caused a complete power outage, power went off and was off until he fixed the situation (not sure exactly what he did, he did flick the power switches on the inverters).
I have a niggling suspicion that the inverters have some sort of limitation in bypass mode, maybe in combination with paralleling, two of the 1 second outages (Friday & Saturday) were with the batteries isolated, I mean you would think that bypass should be rock solid unless there is a grid power outage.
FOUND IT: https://www.mppsolar.com/v3/pip-hsms-pf1-series/
"Important note about Batteryless Operation
When configuring system in parallel using multiple units, please be sure that a battery MUST be used or otherwise it may cause system to work incorrectly, or possibly lead to damage. Due to the inconsistent nature of PV power, batteryless mode can only work normally under single-unit setup"