You are asking to transfer the settings used by Project64 1.6 to Project64 1.7?
Most settings are stored in the "system registry". Project64.rdb (same folder as Project64.exe) contains all of the ROM identification codes and settings to use for emulation of each, but must settings can't be transferred by copying files over afaik.
On the bright side, as I understand it, there isn't comparatively that much to configure about Project64.
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