Ensure that the configuration is properly flattened.Click the dropdown next to the active configuration and double click to activate the 'SM-FLAT-PATTERN' derived configuration.

Open the part file in question and click the configurations tab.When functioning normally, this derived configuration SHOULD have the flat pattern feature unsuppressed in the part’s feature tree, however it is easy to accidentally suppress/unflatten it. Whenever you insert a sheet metal part into a drawing, SOLIDWORKS automatically creates a derived configuration in the part file for the flat pattern. In most cases, this happens because the sheet metal part file’s flat pattern configuration is not correctly flattened. This article provides troubleshooting steps to diagnose why a flat pattern drawing view is not showing the flattened state in a SOLIDWORKS drawing.