Looking at the old and new requirements, the ONLY requirement that is the same is requirement 8. If he did that, he can get credit for it toward the new requirements.
There are parts of requirement 1 that are SIMILAR, but not identical. If he did those (old requirements 1b, 1c1, 1c2, 1c3, and 1c6), he can get credit for most of the comparable new requirements (1c, 1d1, 1d2, 1d3, & 1d6), but must still do the rest of requirement 1c and 1d that was not included in the old requirements.
None of the other old requirements are close enough matches to the current requirements to allow credit for them if he wishes to use the new requirements to finish the badge.
So he must either finish with the old requirements, which is quite acceptable, or complete all of the new requirements, as they are written, allowing for the limited recognition of previous work for requirements 1c, 1d, and 8 that I indicated above..
Paul S. Wolf, P.E.(Ret.) mailto:email@example.com
Secretary, US Scouting Service Project, Inc.