Hello!

Thank you for reading me !
I wil try to transfer my H1b next week from employer A to B...here re my questions:

1. I have heard you can start working as soon as the application is sent? it means receiving the notice or just sending on the mail?
2. If I start working to B, and would like to go back to A in 6 months , can i do that? (asking A for a leave non paid)
3. What are my chances to be approved for the transfer?

thank you so much !!!