The user-guide (v2.5 addendum) is a bit vague so I'm confident that the "hardcore" kpa gurus out there have a better understanding of the 'new' undo/redo function, (mr K?) and can explain, fully.
Sometimes, I notice, multiple undo levels are available whereas other times only the last change can be undone, dependant on what parameter has been altered. Occasionally the undo button 'un-does' multiple changes with one press (eg, amp/gain and Eq simultaneously) ok, so, we all managed without this up to now but a good understanding of every corner of the kpa is useful.
thanks any info