I seem to have the answer to keep the original IMG no . It works if you import images to app . Those are the fingernails . After importing close fuji app . Re open app then click on the photo symbol top right hand corner next to menu . This brings all images up . Select image and then press send / upload symbol bottom right hand corner . This will send it to iPhone options email etc or save to photos .
This method keeps the original img no and stops the long no with about 30 letters and numbers . Hoorah 😃
Regards
Stephen