Simply take the kml file that you have... and put it inside a .zip file.
That simple.
Only put a single file in there... and it doesn't matter what the file is named (though matching the name of the .zip file is a good idea).
@Velocio started
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Simply take the kml file that you have... and put it inside a .zip file.
That simple.
Only put a single file in there... and it doesn't matter what the file is named (though matching the name of the .zip file is a good idea).