Accidentally changed field dominance of sequence clips?

Hi everyone,
Somehow, the field dominance of my sequences have changed from Progressive to F2?? (after alt+click hovering over the sequence to display it’s properties). I have no idea what hotkey or key combo I may have pressed to make this happen, but it’s happened and I can’t figure out how to revert it back to progressive. Anyone have the magic trick for this?

reformat>dominance>change>progressive