I'm not sure which specific Autodesk product you're referring to, but you can submit your own license key locations for scanning under Configuration\Product Keys. Don't forget to rescan your machines afterwards, by clicking the Assets link at the top of the web console, ticking the upper checkbox and hitting the Rescan button on the left.
The built-in Configuration\Product Keys list includes all registry locations that we know of that store keys. I'm not sure if development is aware of any additional locations, but you can add your own to the list as well.