Should work, except for Passwords.
If Liberkey is using portableapps, the profile is saved on one path, and it's moved to another when you run it.
On my side, every time I reset windows, copy the profile to another Pc or USB Stick, It works fine, in my case, I use StandAlone Installation so, you may need to create a Standalone install to modify some files on the installation folder, maybe it works doing It.
They has the info about the type of profile, so it looks inside the Install Folder.
I don't use LiberKey.
Windows 7 (x64)
Opera Test profile | Opera Reset / Back up
