Change of US embassy location for H1 visa interview

[questions.online.222]

Hello - My I-797B shows the consulate name as Hyderabad. So I choose Hyderabad while filing DS-160. I already submitted DS-160 and I have the confirmation page with me.
When I logged into http://www.ustraveldocs.com/in/index.html? to make the payment and book the interview date, it is asking me to select "Country or State of Residence". If I select Kerala or Karnataka, the system is picking Chennai consulate, which is different from what is mentioned in I-797B.
Will there be any issue if I select Chennai consulate for visa interview ? 
System will pick Hyderabad consulate only If I select Andhra Pradesh or Telangana. But I have never been to both of these states.
Can you please advise how to proceed further.
Any help would be much appreciated.

[NotAnAttorney]

I have had this question earlier.

I know my friends who were in same situation but without any issue they were able to attend at different consulate than the one mentioned in i797.