Move resources with their associated data

When we use "move to another root" feature, we should also move their tags, scores, properties and other associated data to the destination root.

Start by locating the implementation of the “move to another root” feature and identify how resources, tags, scores, properties, and other associated data are stored. Trace the move operation and define completion as moving all associated data with each resource to the destination root, then verify the behavior with the relevant tests or a focused manual scenario.

Written by the indexing model from the issue text.