{
AutomationLine::start_drag (cp, x, fraction);
if (!rv.audio_region()->envelope_active()) {
trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), &rv.audio_region()->get_state(), 0));
rv.audio_region()->set_envelope_active(false);
{
AutomationLine::start_drag (cp, x, fraction);
if (!rv.audio_region()->envelope_active()) {
trackview.session().add_command(new MementoCommand<AudioRegion>(*(rv.audio_region().get()), &rv.audio_region()->get_state(), 0));
rv.audio_region()->set_envelope_active(false);