TC has a track record of being lame. When I first recommended them 10 years ago, they claimed their VI jobs were ready to go. They were total screwed up and unusable. Client ended up keying every order (for reasons beyond the TC jjobs). Fast forward to last year, a client went with their BOI integration. I handled the Sage side of things and did exactly what @MadelineStefanou does, imported their screens to a user and manually changed all panels. The import wizard works fine as long as the client doesn't have any customization, which is usually never.
@AlnoorCassim - Interesting concept regarding the installer. Why doesn't Sage offer that option instead of the import wizard?