API Reference > imodeljs-backend > iModels > IModelTransformer > detectRelationshipDeletes detectRelationshipDeletes Method Detect Relationship deletes using ExternalSourceAspects in the target iModel and a brute force comparison against relationships in the source iModel. detectRelationshipDeletes(): void see IModelTransformer.processChanges note This method is called from IModelTransformer.processAll and is not needed by IModelTransformer.processChanges, so it only needs to be called directly when processing a subset of an iModel. Returns - void Defined in core/backend/src/IModelTransformer.ts Line 480 Last Updated: 13 June, 2024