API Reference > imodeljs-backend > iModels > IModelImportOptions > autoExtendProjectExtents autoExtendProjectExtents autoExtendProjectExtents: undefined | false | true If true (the default), auto-extend the projectExtents of the target iModel as elements are imported. If false, throw an Error if an element would be outside of the projectExtents. Defined in core/backend/src/IModelImporter.ts Line 24 Last Updated: 13 June, 2024