B4055 downgraded

[roadphotos]

Has the B4055 between Pilning and Northwick (near Bristol) been downgraded to an unclassified minor road ?. Some scales of OS mapping now show the road as unclassified. Only the OS Landranger still shows it as the B4055, all other scales show it as an unclassified minor road (not numbered). Does anyone know for sure if it's been downgraded as I don't want to change it on the Wiki until I'm certain that this is the case. Also I could never see why the road between these 2 villages was ever part of the B4055 in the first place as there's a better alternative via the A403.

[SouthWest Philip]

Isn't/wasn’t this road actually a spur of the B4064?

Edit - I'm thinking of the also recently downgraded spur to Redwick.