Currently I am working for one of the company X who filed H1B. Now i tried to find another employer Y and that employer Y did file H1B And now this new petition is approved. However I decided not to join this new employer and continue with my current employer X. This new employer Y has refused to share the scanned copy of the approval notice. This new employer Y has only shared the case number with me.
Do I need the approval notice from this empoyer Y in future H1B transfer?