I've moved the nodes using JOSM in https://www.openstreetmap.org/changeset/119560161.
I haven't really moved nodes using OsmAnd; I'm not sure it's even possible. It might be possible with Vespucci, but I haven't used it much.
IMHO, it's easiest to move nodes using desktop editors like JOSM (see https://learnosm.org/en/josm/) and iD (https://www.openstreetmap.org/edit).