So looking at this RAM-aware batch processing example for GlossaryWriterStep: https://docs.spryker.com/docs/scos/dev/technical-enhancement-integration-guides/integrate-elastic-computing.html#integrate-ram-aw[…]batch-processing Seems that nothing is going to get persisted in the database if the dataset is so small that this never returns true

if ($this->memoryAllocatedElasticBatch->*isFull*())

the data import process should call a last time again a flush... did u checked if it so? this is just for such situation