Based on the fact that a couple others had issues with connectivity on the upgraded Xoom, I guess I will wait of use the Rogue OC kernel instead since that once says it is compatible with 3.2.2Just a quick update. I was on a trip with an area that had no 4G and turning off wireless did not result in an auto config of 3G until I did a reboot. This morning I am back in my town and turned off wireless and did not get 4G until I rebooted.
After I rebooted I could switch between wireless and 4G without issue. I tried it 5-6 times and was able to go back and forth between 4G and wireless.
Not sure why it did not work early this morning before a reboot.