DWGs and other CAD Imports and Links can be hidden within your Revit project and impact your file size, performance, and printed output. Use Ideate Explorer to find and delete these imports.
Note: The <View-Specific> designation is an indication that the CAD Import or CAD Link was brought into the project while the "Current View Only" checkbox was selected which will cause Revit to treat the element as an annotative, or view-specific element and not as a model element.
Related topic: What does the “No Good View Can Be Found” Message in Ideate Explorer Mean?