You can redefine a lane (along with all event steps on the lane). The values of the events are retained, but the event type is changed.
In Logic Pro, click the name of the lane you want to convert.
All steps on the lane are selected.
Do one of the following:
Choose Lanes > Convert Lane (or use the corresponding key command).
Double-click the name column of the lane that you want to convert.
Choose settings in the Convert dialog.
Control Surfaces Support Guide: PDF