Arbil allows to move both corpus and session nodes from one location to another. To do it, select in your Local Corpus a corpus/session you would like to move and drag and drop it to the new location. It is also possible to move subnodes of sessions, e.g. Actors, across sessions.
Be aware that when you copy a node, Arbil does not recognize it as a node but rather as a file. That means that the whole structure of subnodes has not been copied properly. You need to do in a second moment.