When you upgrade from Spectrum Technology Platform 22.1 to Spectrum Technology Platform Data Stewardship data is moved from Neo4j to Search Index (OpenSearch).
During the upgrade a file is created that contains all the data that is being moved from Neo4j to Search Index (OpenSearch):
SpectrumDirectory\modules\stewardship\import\Stewardship_Upgrade_spectrumversion.zip
This file is removed after the upgrade is complete.