API Reference > imodeljs-common > Entities > ChangedElements > oldChecksums oldChecksums oldChecksums: undefined | number[][] Before state checksums of the property value Useful to determine if property values have changed between the versions being inspected This may be undefined if the agent that did the processing job did not export checksums Defined in core/common/src/ChangedElements.ts Line 60 Last Updated: 11 June, 2024