The plant may be having trouble getting nitrogen and is showing yellow leaf veins. Iron chlorosis turns the area around the leaf veins lighter green or yellow but the veins remain green. New growth can look lighter green for a while and then turn darker. If the new location gets more sun, the leaves might turn bronze (and dark green after a while).

If you want blooms in Spring, consider that it may suffer from transplant shock and you may not get blooms if the shrub aborts the flower buds due to the move.

Hard to gauge things on pics but it looks to be in good shape to move. Moving when dormant is usually less stressful. And mark the area so you do not step on it by accident.

Pretty much every time I've rooted cuttings, I've had at least some leaves drop off. I think until there are well-established roots, it may be difficult for the plant to support many older leaves while also putting out new growth.

If you were seeing problems with new leaves, I might be concerned, but those look like older leaves to me?

As for deciding if they're moveable, as Luis says, it's hard to tell from a photo, but they look like they are about ready. You may want to gently dig one up to check on the root growth, and re-plant it if you aren't satisfied with its progress...

Good luck,
Virginia

Those three lime-green leaves in the right-hand upper quadrant of the photo are the new leaves. They are perfectly formed and glossy and look healthy. I guess I will have to gently dig it up (oh! is this impatience??) and investigate. I guess I can always put it back in it's nursery bed if not enough roots... Thanks for tips. Will see what it looks like this weekend.