Google is giving me fits

Move them in early spring before the buds fatten up or the leaves
break out.
They are shallow rooted so you will get a little mat of roots with
them if you carefully pry all around them with a spading fork.
While you are at it cut any branches with exfoliating bark to the
ground as they are too old to bear well .
Get you pH adjusted down to around 4.5-5.0.
They xplant pretty well with care 100% is easy.