Nothing I try works. I'm an advanced user for this type stuff too. I can't get any offline content on USB to work from the XBM. This is truly ridiculous. My content shows but absolutely no option to "copy" anything. All of the my save files on a USB device shows with correct information and timestamp but will not allow me to copy.
I've tried another SD Card too to make sure it wasn't the one I had been trying to get to work. I thought maybe the blank flash drive I have was the problem. It's not your standard drive with space on it.
It only has an SD Card slot to use for storage/data. That doesn't seem to be an issue either. I'm just baffled at this really. It's like something from the PS3 is locking me out for copying save content from USB. I'm really aggravated about this because I can't get any of this offline content to work for my sports games.