There is no way to recover deleted drawings! Don't be hasty to clean-up or delete old versions of drawings. Take advantage of the version control this Web Tool provides to maintain an archival history of your POST Drawings.
Drawing Properties on the drawing list or VERSIONS menu
Delete drawing and all versions at the bottom of the page, and
CAUTION! Deleting drawings in this manner will remove all versions. Please be careful! Deleting drawings will break any links from external web pages to that drawing. There is no way to recover deleted drawings!
Version Settings next to the drawing version on the drawing list
Delete this version at the bottom of the page, and
If a drawing only has one version
Drawing Properties from the drawing list or VERSIONS menu
Delete drawing and all versions at the bottom of the page, and
If a drawing version is currently Published
Version Settings link on the old version to delete that version, or
Drawing Properties from the drawing list or VERSIONS menu to
Delete drawing and all versions (at the bottom of the page), and click Yes to confirm.