The diagram being updated
here may be of help. I'm not sure of the meaning of you quote, but we know much more about the program than RetiredWarHorses mistakenly assumed in January. How this relates to the TM Service Manual is that the platform was experimental and not obsolete, the TM apparently contains classified information (probably for the weapons, comm's systems, indicators of tactical use, inferred capability, etc), and has not been released to the public. So, we are making our own wiring diagrams.
Oversimplified, the ITV program was a planned USMC 10-year experiment to gather information and data relating to battlefield rapid-deployment in helicopters and VTOL aircraft. The program was to run from 2008 to 2018, with dismantling in 2019, and did exactly that. There was no divestiture, obsolescence or other 'negative' response, and the ITV research program was successful in its goals. Per the schedule, the vehicles were demilitarized of communications, weapon systems, navigation systems, etc, and released by requirement through RB/GovPlanet contract under ITAR. As the experimental program research information and data is being collated and used for further development and strategic guidance, much of the relevant info has not been and may never be released.
As the vehicles were part of a "weapons system", they are still actively held under ITAR regulations, which is why you must complete a background check by multiple agencies in order to qualify to obtain one from the Government. Note the ITAR regulations continue to follow the vehicle after initial acquisition, with certain reporting and transfer limitations. Because of this, we may never know exactly what was learned in the research, nor its effects on today's and tomorrow's MV development and tactical or strategic application. Based on accounts from individuals involved in the development and testing, they had extreme capability and robustness. Indications (which, again, cannot be specific) were of high regard for the ITVs.