If an entity or attribute is selected for deletion, the user may undo this action so that the entity or attribute will not be deleted when the data model is activated with other changes. To undo the delete, click on the “Undo Delete” option available against the Deleted Action.
Undo delete can be performed at the main entity level or attribute level. Performing undo delete at main/parent entity level cancels the Deleted Action for all of its child entities and attributes.