When you want to transfer a file from your iPad or remote device to the computer, the copy-and-paste feature doesn't always work. I'd have to turn on the Bluetooth a lot of times and transfer it that way on both devices, which was troublesome. However, it would sometimes randomly work. I could go on my iPad, find whatever I wanted to do, click copy, then go over to the computer through Parallels Access, click paste, and it would randomly work. I had to call Parallels many times. They would log in and try something, which would temporarily work, but then it wouldn't. When it worked, it made integration between the two things great. That was a very helpful feature that didn't get polished.
