@boynigel Yea, I hear you. I have a card reader for multiple physical sizes of SD Cards. I will periodically use the Maintenance screen to eject the SD card. I then use the reader to backup to my USB drives and a special backup hard drive I have. It may be a little convoluted but it does work well. Also, at one point it was suggested backing up the complete folder structure of the SD card this way. It helps if you format a new SD card and the folder structure is not rebuilt.
The only "at once" trick I found does not backup global settings. However, if I highlight all my presets and perform an export it does backup all the preset individually at once. It DOES NOT ask if you want to over right any existing however.
Dennis