I own a Black Magic Pocket Cinema Camera (BMPCC), and the ND2730 is a neat solution for backing up the cards when I a on a shoot outside.
You might know that the camera does not support formatting the card - hence my question: can we erase the data from the SD card once it has been backed up on the ND2730?
Perhaps this is not a "native" feature of the ND2730, but after reading the user guide, I might found a way to do it: backing up one time, and then trying a second time. The second time, the ND2730 will (would?) ask to delete the duplicate files on the card, which provides the same result of formatting the card. Can this work?