I think you really need the Sony privided XDCAM Transfer software to transfer the files from your SxS cards to your computer for use in an editing system. I’ve been using it flawlessly.
I am surprised that you are having success with the Transcend cards as I’ve heard many complaints about them and especially that you are using Class 6. Everything I’ve ever read said you really need to use Class 10 so that is all I’ve been using. I use only Hoodman Raw SDHC Class 10 ($180) with the Hoodman SxS Adapter card ($40) and have had no problems and I shoot very frequently and reformat the cards after each shoot.
Glenn Student
D&D Video Productions
Las Vegas, NV