Ah, here's the purpose of the Mystery Money, that $8 Mill could be in here for the new display if that's meant for IVAS 1.2

Appropriators also moved $40 million from the Army’s night vision devices procurement request to the service’s research and development account for continued work on the “1.2” version of the IVAS headset.

https://www.defensedaily.com/army-gets-360-million-ivas-procurement-cut-300-million-envg-b-increase-in-final-fy-23-budget/army/