When in Flexi active, if I select inactive channels 1-10, 1-10 are selected. When in Flexi active with highlight 1-10 selects only channel 1. This is because at the point where "thru" is pressed, 1 becomes active, and starts messing with the selection mechanics. You would have to use thru thru, but only when highlight is active. This feels weird and bad, I don't think highlight should change the outcome of selection actions.
Either channels should not be highlighted until the command line is terminated, or selection logic needs to only be modified once the command line is terminated.