What if we say AD 1 booster is going to be used in pranash but isn't prahar missile was also derived from AAD which was the main reason behind its non induction.
On Airframe Basis roughly..
Prahaar = AAD
Prahaar ER = AAD with added canards
Non-induction could be of varied reasons. One possible reason being the radical AD-1 itself that required a new generation booster. Although the new AAD with canards can be produced on limited numbers.
DRDO & Military knew from day one that even if AAD (15 year old concept) gets inducted 10 years back, it would cost lots of money + become outdated (on Eastern Front) by next full front war predicted to happen by this decade. Above that, DRDO always went for modular design for cost savings, so Pranash happened, that could also power up AD-1. And prolly incorporates the same high energetic composite propellant used at Pralay and SMART.
AAD is a single stage solid fuel ABM, that can reach 50km altitude, but cannot sustain there for extended time. Chinese Long Range Quasi Ballistic Missiles cruising at 50-80km altitude brought the need for a dual stage endo-atmospheric ABM, featuring an agile 2nd stage, that can cruise for extended period at 30-80 km altitude without losing its velocity.