Hi @DatabricksUser5 also look for eventhub retention policies for example if your eventhub retention is set to 7 days which means those events older than 7 days which you are trying to re-process are already doesn't exist in eventhub so no matter what you choose they are gone and you need to replay them afresh.

also setting to earliest or latest for kafka obeyed only for first run with clean checkpoints, after streeaming will always respect checkpoints. you wont be risking cleaning checkpoints else you may face duplicates in your data if only append operation.

Br