Hello:
I am surprised that there is no undo function to do a metadata write. I have write GPS data over files that had already GPS data so now all files have the same location data. I only wanted the files to add this data that had no GPS . Still don't know how to accomlish this apart from selecting manually every file that has no data which is a tedious and long process.
But the worst is that it cannot be undone once write. So I have to delete all those files and copy them again from my backup which is really painful.
I hope that such a basic task is added in the future.
Thank you
Cristian