Bug? when changing offline processing, clip restores original length


this is bugging me for a long time now and has not been fixed yet:

when I go back to a clip that has some offline processing on it and change some offline values (like eq or pitch), the clip is back in its original lenght.

so if I take 1sec out of a 4min file and edit it, suddenly it is 4min long again, overwriting all automation etc.

is there some option I am overlooking?