In a change to legacy behaviour, starting the sequencer will not delete notes from the track currently selected for recording - this now allows a track to be overdubbed. However, in addition to using Clear there are two options to remove previously recorded notes as follows:- Whilst the sequencer running (and a track is armed for recording), clicking the Play button will delete the track under the chase light - and, if recording to a track chain a double-click of the Play button will delete all notes in the track chain.
Note: Whilst armed for recording the Align function will not be available because the Play button is used for the track/chain clear function.