It means the same thing it would mean in America. It's just moving from one state to another- which may not be too big a deal if you're going from South Carolina to Georgia or something- but if you're going from say, Florida to Washington state- that could be a move!
(Of course, if it's to Hawaii- then no complaints there

)
If it was intrastate, it would just mean that you're moving somewhere within a state.
(And most of you probably already knew the difference between those two- but I always tend to mix them up- so I looked them up to be sure.)
Oh yeah- good luck with the move! By the way, the Oz reference reminded me- does that mean Dorothy and Toto actually visited Australia when they visited the wonderful Wizard of Oz?