Pratik,
So, I understand that you are not able to trace to an IP beyond Location A's HSRP address or you are not atleast able to trace 'to' HSRP address?
Please answer below questions ?
1) What about ping? To which point does it work until
2) Does the stations behind the Location A's HSRP have the default gateway set to the HSRP IP?
I believe there could be an issue with the return traffic.
Rama.