My camera (Nikon D7200) has dual SD cards. I have it set so that card 2 is a backup of card 1; ie when I take a shot, a raw file is saved on both cards.When I import into Lightroom 6 from the camera it sees both cards as one source and, unless I manually uncheck each alternate file, Lightroom will import two copes of each file. I have do not import duplicates checked but this seems to only apply to images already on my hard drive.The file name of each image is the same on both cards. When importing, both appear in the source window, neither greyed-out, and each image has the same file name. Upon importing both copies are copied to my hard drive, one with the original file name and the second with a "-2" added.Is it possible to get Lightroom to either allow me to import from only one of the two cards or not import the duplicate in some other way?