When you export from Lightroom, there is a tick-box called "Remove Location Info" under "Metadata" within the "Export on File" dialogue. Have you checked if this box is ticked?
I scrolled down to Metadata in Export and "Copyright Only" was selected and the "remove locaction info" box was ticked. I will run a test set of images with "All Metadata" selected and "remove Location Info" un-checked too see if it will work. Thank you very much!