Lose your gigapulse settings, and the nice new labels to inputs, if you change the number of inputs or groups in system settings. Beware!!!
This seems to happen even if you have saved your work after changing the number of inputs/groups.
( .... bug alert .... )
I could not get this to happen.
Maybe the cause and effect is not accurate then -- did, however, lose all labels and group effects settings in a fully configured performance; the only thing I could remember doing differently was adding some more inputs.