My future employer sent my H1B transfer documents to USCIS (VT center) on Apr 14 and they received those next day. Its almost been 3 weeks, since I am waiting to receive the case number from USCIS…i am not comfortable in resigning from my current employer until I receive case number…its a regular processing…any idea, when will I receive it? Is it delayed due to heavy load on USCIS due to H1B lottery going on ?please help