Hmm, I don't know enough to give you a confident answer yet. However, I can provide you with some resources that might help you troubleshoot the issue: 1. [Airbyte's Change Data Capture (CDC) Replication Tutorial](https://airbyte.com/tutorials/incremental-change-data-capture-cdc-replication): This tutorial provides an overview of CDC replication and how to set it up with Airbyte. 2. [Airbyte Documentation on Postgres Source](https://docs.airbyte.com/integrations/sources/postgres): This documentation provides information on configuring the Postgres connector with CDC and its considerations. 3. [Forum Discussion on BigQuery Destination using Incremental Append](https://discuss.airbyte.io/t/2127): This forum discussion might provide some insights into similar issues faced by other users. You can also consider posting your question on the [Airbyte Forum](https://discuss.airbyte.io) or [Airbyte Slack](https://airbytehq.slack.com) to get more specific help from the community and the Airbyte team.