I am getting inconsistent results in my tests - using the current beta 1.32.8.7639
- one test after adding 2nd lineup, resulted in no list of channels in the dropdown on the channel matching screen
- cancelling and starting again, the dropdown did show up and actually all channels showed up at the end - first lineup ones and the few I switched mapping to the 2nd lineup
But in my tests of the various Plex Media Server vetsions after 1.32.2.7100, I did get several times only the 2nd lineup channels appeared at the end