There are a few lighting desks (Strand, Compulite) that have a thru-on function, which makes just the channels with a value above zero active when you type a range. This could be a great addition to the already valuable "Flexi Active" page
When in a cue with channels 1, 18 though 26 and 101 at a level and everything else at zero you could type:
[1][shift][THRU][1][0][1][wheel]
to add a few percent to just those channels that already have a value, without touching the channels that just went to zero in the live cue when in Flexi Active.
[shift][THRU] would read as "thru-on" on the command line