I was disappointed to realize that the ArcGIS button in Infraworks was only able to link to the ArcGIS database instead of letting me open and link-in an existing ArcGIS project from my server. If these Autodesk software are supposed to be super compatible, this seems like an obvious connection to be made that would help save time instead of having to re-compile data from scratch in Infraworks when a perfectly organized ArcGIS project exists.
For context: I have a ArcGIS project that has hundreds of shape files compiled and grouped nicely that I downloaded originally from Open Toronto. There seems to be no way to connect these two files, only to reimport every single shape file which is extremely time consuming and redundant.