You can remove multiple placed model, object, or connection attributes from the model window in only one step. Of course, only the attribute placement is deleted and not the value that was placed.
Click Attribute placement > Delete attribute placement. The dialog is displayed.
Enable the check boxes for the placed attributes whose attribute placement you want to delete. You can enable all check boxes at once by enabling the superior check box Attribute name.
Click OK.
The placements of the selected attributes are removed without prompting for confirmation.