I've lost my IMEI (well, it's become 0)
I had the same issue upgrading from Android 4.4.4 to Android 5.0.2 on my Samsung Galaxy SM-A300FU.

The problem was, that I have rebooted the mobile into download mode and did not power off the device. Odin has successfully flashed the modem partition, but it was not really accessible. I had flashed a new platform build, but the baseband version was the same like before flashing.

Maybe there is a similar problem on your Moto. Try to shutdown your device, wait 10-20 seconds to get sure all caps has been discharged and try again to flash your modem partition.