I had not picked this up before - I should also be OK with grandfather rights, but yes, reading LASORS it does say that microlights need signing off - but it would seem (though I might not have found it yet) that a 3 axis sign off will cover
all microlights. IMHO I would have thought it
much more important to be signed off going 3 axis to weight shift than just non microlight to microlight - You could be flying a 'heavyweight' RANs and need the sign off to fly the lighter version but then go straight to weightshift with nothing more which seems a bit daft.
