Changes are often made to the Smart P&ID Reference Data while work is being managed on the P&IDs. When these changes are made, they apply to all drawing items after the time of change, but do not apply to existing drawing items. The Update Drawings functionality (provided by the set of Out-of-Date Drawings commands in Drawing Manager) allows you to manage which drawings are updated with the latest reference data changes by defining values that define out-of-date drawings criteria and by resolving any symbols that have been deleted, moved, or renamed.
You can also schedule these update operations and create reports. See Updating Drawings in Drawing Manager Help.