Hopefully my last post concerning this topic. On Thursday January 5, 2023.
On 50 amp shore power I tripped the GFCI receptacle. Microwave still had power. Frig displayed "noco". GFCI was rewired so that the frig receptacle is no longer GFCI protected. Now when the GFCI is tripped both Micro and frig stay "on". The inverter is operating correctly and frig is happy.
Thank you to all for your input and advice.