Move Planes? If you move them, virtually nothing changes. The actual Plane is exactly where it was before you moved it.
Easiest example to see it involves a Revolve. Make a Revolve using some plane. See where it is? Now move the Plane back 3 inches or whatever. The Revolve stays where it is. Now make another Revolve using the same Plane (that just moved). Your next Revolve is on the same plane as the first one, before you move the Plane.
To me, moving planes may just confuse you, or it is a nice way to trick a co-worker into wondering what the hey...
Ohh, did you move one, and you want to put it back? Well, then just right-click on it and choose Autosize. There you go...
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Mr. Pickles