Yes , you do have to go through to whole process , the G5 has to go back to her country to start a new contract whit the new boss .

Question on employing a G5. I understand getting a new G5 visa takes a bit of time (10-12 weeks +). If the candidate already has a G5 visa with another family, is it faster to transfer the G5 or do we have to go through the whole application process again? Any one with experience?
Thanks!