Photos geo information being lost?

Hi all, I take AEB photos on my drone and then combine into a HDR image for editing in Lightroom. 

The location information persists after I combine into a HDR photo and edit, however when I then view this photo in Lightroom for iOS and export to Camera Roll, the location information seems to disappear!

Do other people experience something similar, and if so does anybody have a remedy to make the location information stay with the photo?

Thanks