Here's an update on my repair transaction. The original invoice from Cerritos included a $65 freight charge. I tried the chat function and email in an effort to get them to update the invoice because I was OK with surface shipping. No luck. I was anxious to get the repair started, so I went ahead and authorized the full invoiced amount through PayPal. When I got the notice that the repair was completed, I got onto the chat line one more time in an effort to get DJI to credit my PayPal for the extra $65 I had been charged. It took over two hours, refreshing the chat every five minutes to get a solution. The DJI rep finally got the invoicing folks to admit the freight charge was an error. He told me they could not credit my PayPal account (which is BS, I think) but agreed to send me an extra battery so I was cool with end state.
My drone showed up in the mail today as advertised. Like a couple other folks who have sent their MPs in for repair, it turns out the Cerritos folks just sent me a new MP with (thank goodness) my original SD card. My original MP was registered with the FAA. Does anyone have experience with transferring a registration to a different serial numbered airframe?