Consulate mentioned in I797

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My previous H1( I797) did not mention any consulate it was blank.

I have a valid H1 stamp from my previous H1( valid till jan 2018).

my old company revoked my h1 , i came back to India. 3 months later , company B applied for my H1 it is approved.

Q1) can i travel on  my previous stamp( passport valid, stamp valid till jan 2018)

Q2) new I 797 ( valid till  may 2018) has INDIAN city mentioned under consulate, does it make any difference.

Help please