Hi,
1. In step-by-step overdub mode, only played keys are recorded. Tie/Rest button is ignored.
2. In step-by-step overdub mode, undo should only remove latest recording in track, not all events.
3. I'd like to hear recorded track, as I record step-by-step in overdub. That's how it works in the Roland JX-3P step sequencer.
4, Grid editor in Midi control center, should also be available for Keystep Pro, and MatrixBrute.
Kind regards