When your gallery changes you need to share it again to reflect any changes done. MovieGallery will help you do this as efficient as possible. When sharing for the second time to the same share location MovieGallery will synchronize the share folder with your gallery. This means that media marked for Recompression or Flattening will not need to be Recompressed or Flattened again if not needed. Such actions are lengthy processes and you don't want this to happen if not necessarily needed. This is how it works;

All other information, like new playlists and info, will be updated in the newly shared gallery.