You should also be able to reverse the D700 and D7000 scales to match the D800 default if you wish. I can do it on my D300 and D90, so it should be possible on the D700 and D7000. The settings will all be in the CSM f group, but the numbers will vary for each camera model.
Personally I like all my cameras to match so I changed my D4 and D800 to the old way.
I think Nikon changed the default direction of the exposure scale because many new Nikon users thought a plus to minus scale was backwards. Nikon used the "backwards" scale because it matched the direction you needed to turn the aperture ring to zero the exposure meter. Now that new lenses don't have an aperture ring and most users don't use it even if their lens has one, Nikon turned the scale default to what many people consider "correct".
BTW you can also reverse the dial directions to match the direction of the exposure scale. This is in other CSM f group settings.
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