Lately I've been harvesting and when I see other people come up or i see a node way out of reach above me or in an area that will not let me harvest.
I click on one node to start harvesting it and then click the other one or tab to it and it continues to harvest from the node that i clicked on, not the one that I started from.
I find this extremly useful in harvesting in the T6 Croc caves.
This does not work on different types of nodes though .. aka harvesting vs mining.. doesnt happen.