One thing I want to add: Instead of giving us a life story or a history of your feelings, which are both pretty irrelevant when trying to figure out what the problem is and how to fix it, try to respond to specific questions.
So, let me try for the 3rd time:
Please respond and give info especially when the questions are asked by the dude who wrote a big chunk of the program. There's no way to guess what you did, what's your computer configuration, where the problem actually is (if there's a problem or you choose a wrong option). I have no issues taking snapshots with all my documents (except that the resulting ISOs are too big so I don't usually do this) but there might be something specific to your configuration or the steps you took.
Are you running Live from a flashdrive and trying to take the snapshot, or running from an installed system (on a HDD/SSD)?
If you are willing to troubleshoot I can give you some steps to try to isolate the problem, but first thing I want to know is if your data was actually copied and doesn't show in your account for some reason or it wasn't copied at all (that's why I asked about the size of the ISO three times).
Another question, it might or not be relevant, what is the name of your user account, do you have multiple user accounts on the system?