SD cards are notoriously tricky with the Panasonic bluray recorders.
For example Mpeg 2 videos can be put onto a SD card but they won't play, Mpeg 4 (HD) videos put onto a SD card will play however these Mpeg 4 files cannot be moved onto the Panasonic hard drive, you are prompted that only Mpeg 2 files can be moved onto the hard drive and these won't even play from the SD card.
As for importing HD from bluray discs, it appears that this can be done from discs which have been formatted by the Panasonic first and have no copyright restrictions, so an unencrypted bluray disc with no copyright protection which has not been formatted cannot be imported into the Panasonic, and if you format the bluray using the Panasonic, then you cannot put the disc into a computer and burn any video onto it.