You have recently upgraded from NVivo 12 to the new NVivo and now want to continue working with the existing project files. No problem, you can open your existing NVivo project files in the newest version of NVivo and they will be converted (as a copy).
However, NVivo 12 users might be surprised by the changes of the interface in the new NVivo, and might be wondering:
"Where are my files? Is my project file empty?"
The answer is mostly, no, your NVivo project file is not empty. You find your files under "Data" and "Files" - but you need to expand the list first to see the sub-folders (see below).