Bad idea to change the Save options in the ETL. I've been shooting down to the bottom option "Save and Run" for years. I've already duplicated multiple datasets working fast, have to back track, delete the duplicates, and update the actual ETL.
Oh no! I hate it when a product updates and your muscle memory for how the product used to be is causing problems in your workflow. Based on your feedback, we're talking through ways to make the change less impactful and hopefully prevent the duplicates that you're experiencing. Thanks for taking the time to provide that feedback for us.