API Reference > imodeljs-backend > iModels > IModelTransformer > onExportElementMultiAspects onExportElementMultiAspects MethodProtected Override of IModelExportHandler.onExportElementMultiAspects that imports ElementMultiAspects into the target iModel when they are exported from the source iModel. This override calls IModelTransformer.onTransformElementAspect for each ElementMultiAspect and then IModelImporter.importElementMultiAspects to update the target iModel. onExportElementMultiAspects(sourceAspects: ElementMultiAspect[]): void note ElementMultiAspects are handled as a group to make it easier to differentiate between insert, update, and delete. Parameter Type Description sourceAspects ElementMultiAspect[] Returns - void Defined in core/backend/src/IModelTransformer.ts Line 723 Last Updated: 12 June, 2024