Unfortunately, I don't know of any easy way to do this.
XLv.X stores keyboard shortcuts in the
~:Library
references:Microsoft:Excel Keyboard Shortcuts
file. XL04, I would guess to be more MacOSX-like, switched over to
storing them in the
~:Library
references:Microsoft:com.microsoft.Excel.prefs.plist
file. The two files aren't directly compatible.
If you open the "Excel Keyboard Shortcuts" file in a hex editor, the
tokenized shortcut is stored starting 4 bytes after the ascii characters
data (hex: 64 61 74 61).
If you open the .plist, you can see that the
Microsoft Excel\count
element keeps track of how many keyboard shortcuts there are, and the
Microsoft Excel\data
element stores the same tokenized shortcut.
So in theory, you could open your v.X shortcuts file in a hex editor,
and edit the .plist file accordingly (it's just an XML text file), but
it would probably be faster to create the shortcuts in XL04.