To be certain you have incorporated edits to all geometry in a part file, use Rebuild All. Autodesk Inventor regenerates the entire file, even if some geometry did not require an update.
You must be working in a part file:
By contrast, the Update command regenerates only the geometry that has significant edits held in memory. If the Defer Update option is selected (on Assembly tab of the Application Options dialog box), you can continue working without incorporating edits to geometry until you click Update.