What is your control link? 

DJI

DJI, I’ve gone through Betaflight, and to my knowledge everything looks good. I’m missing something. 

Do both drones have the same flight controller?

I'm assuming both air units were working with no issues before the swap and wiring is correct.

But also thinking something may have been changed somehow.

At your own risk try this

So on both flight controllers 

-Copy\Paste” set sbus__baud__fast=on ”into your
Betaflight Configuator CLI then hit enter.
Then 
-Copy\Paste” save ”into your
Betaflight Configuator CLI then hit enter.

Also in your Goggles menu:
Settings>Control>Protocol
Make sure "Sbus Baud Fast" is selected

On the Blitz Mini make sure Serial Rx is selected on UART2
On the Goku AIO make sure Serial Rx is selected on UART1

Also assuming you mean this AIO:

GOKU GN 745 45A AIO 32bit V3 Plug&Play O4 / O4 Pro

Check your receiver tab in betaflight , what is the control protocol. While it's plugged into the computer and a battery plugged in, WITH THE PROPS OFF, turn on your controller and go to the receiver tab. If you see any movement on the channels while moving the sticks, then the receiver isn't a problem, otherwise you may have to confirm it's running on sbus for the dji control link. You can also verify your modes and what channel you have arming on. 

@ksal @YorkieCanadian thank you for your input both. It ended up being the set sbus__baud__fast=on in CLI. Fast SBUS was set in goggles.