Perpetual licenses are ideal for individuals or small offices requiring only a few individuals to access and use Autodesk products. These licenses let you use your version of software for as long as you want, and do not require network connectivity to run.
Can I upgrade my current license of Autodesk software?
If you already have a legally installed version of Autodesk software and are interested in purchasing a license of a newer version, you may be eligible for an upgrade. To qualify for an upgrade to Version 7, you must be moving from SketchBook Pro 2011 or SketchBook Pro 6.