yes - my understanding is that the lane changers can stay in place - ie they will not electrically link the 2 lanes, and all the rest should be as you say as well.
According to scalextric, you do need to remove the analogue powerbase completely from the track to run digital, and vice versa, to avoid damaging one or both of the power bases.
According to scalextric, you do need to remove the analogue powerbase completely from the track to run digital, and vice versa, to avoid damaging one or both of the power bases.