The 16.1 installer imported the profile from the 16.0 installation. I have already copied connections from the beta, now looking for the files to copy for SQL Recall.
If you want everything, go to main menu -> Utilities -> Copy user settings.
Then choose the beta install. You may have to browse to it.
But, to answer your question, copy the file: SavedSQL.XML from one user files folder to the other.