Basically the ship changes hands. All the personnel stuff stays the same. I assume that the Roosevelt crew (the one based in Norfolk) will be pretty much split three ways when they bring Washington to Newport News, some will stay on Washington, others will go to Lincoln (coming out of refueling and back into active service) and some will go to Ford (entering service). To a lesser degree some of the crew will go to other assignments in the Norfolk area.
This is kinda what happens when a carrier goes into refueling anyways. The contractor (Newport News) has the ship for little over three years and a big part of the crew gets dispersed to other assignments.
OK, thanks...BTW, that was supposed to be “carrier”, not “career.” Hate when I do that...