Giving this some more thought....
So, if the candidate only ticked "on the electoral role" but no other qualifier, then they move outside of the town or parish electoral role area they cease to be a Cllr - BUT, say they only moved 1km outside the boundary, it appears they would have to cease to be a Cllr, whereas someone that STARTED OFF outside the boundary and used the "within 3kms" qualifier would still be a Cllr? Or am I reading that wrong?
Just on another point, the 3km eligibility, I can't remember if this question has been asked / answered (or remains unknown) is the 3kms "as the crow flies (from place of residence to nearest point on the parish boundary) or is it by road route?? I've a feeling it is as the crow flies but can't remember.