Polarity anomaly - UMIK-1 vs. UMIK-2

[Keith_W]

Given my relatively limited knowledge, I would need more details, please. Does the WAV file need to be read in REW to go to the AVR? and I want to check the microphone, what should I look for in REW?
I was not concerned about the polarity of the speakers until now, which have all been “positive” for 10 years or are you and @Keith_W saying that it might be possible that all the 5 satellites pop in instead of popping out with + battery connect to red input of each 5 satellites...

It does not matter if your mic inverts polarity, because all measurements taken with that mic will show the same inverted polarity. At best it is a mild irritation, a bit like installing a light switch upside down. It still works, still turns on/off the light ... but how much does it bother you that the switch is pointing up when it should be pointing down?