Hi!The 'no evidence' statement was for the exo-atmospheric maneuvering, not endo-. My bad, didn't read it carefully.
I agree that only exo-atmospheric maneuvering is possible using the current hardware in possession of both countries, and pre-calculated maneuvers will have to be executed to do so. That's precisely why I separated Shaheen-I/II/Ghauri/Ababeel from Shaheen-IA/III.
There is an active research going on in the field of hypersonics in India at DRDL and a few folks that I know are working on the scramjet. Over here in India, design of Guidance and Control architecture for hypersonic vehicle is not as challenging as perhaps sustaining the combustion in the scramjet combustion chamber- current "demonstrated" capability is of the order of ~20seconds! This figure needs to go beyond at least 100 seconds for any meaningful long range weapon!
There is this very famous AIAA paper that deals with the design of adaptive sliding mode control for hypersonic vehicles.
"Adaptive Sliding Mode Control Design for a Hypersonic Flight Vehicle"
Read More: https://arc.aiaa.org/doi/abs/10.2514/1.12596?journalCode=jgcd
It is not difficult to implement such a control strategy on the current generation hardware. There are other much easier control algorithms available, however this particular one has an online adaptation mechanism built into it and does not require perfect modelling dynamics. The only thing that will change is the Guidance scheme.
Finally coming back to the main point, even exo-atmospheric maneuvering requires pre-determined nudges to still come back to such a trajectory that will land the RV on top of the target. It should be possible to track the 'nudges' via a X-band tracking radar.