I have a hosted FM13 soution where I have tif files stored in a container. I can right click on the container and Export Field Contents. I also have a script that exports the field contents to the temp folder and automatically opens the file.
I changed the Field to use External Storage. When the file is hosted and I right click on the container "Export Field Contents" is dimmed. When I run the script to export it I get an error "Container fields cannot be exported". If I close the file on the server and open it directly both the above functions work.