**OS:** Win 11 **Build Version:** 20250807.1 **Regression:** Not a Regression **Repro Steps:** 1. Create a durable project with "Durable Task Scheduler (Preview)" durable storage type selected. 2. Open local.settings.json file of this project. 3. Check there is no extra setting `"%TASKHUB_NAME%": ""`. **Expect:** There is no extra setting `"%TASKHUB_NAME%": ""` in local.settings.json file. **Actual:** There is an extra setting `"%TASKHUB_NAME%": ""` in local.settings.json file. <img width="506" height="227" alt="Image" src="https://github.com/user-attachments/assets/3e658907-efcf-4482-a813-394efe90ed5b" /> **More Info:** 1. Debug this project -> Click "Manually Set a Connection String" button -> Provide DTS connection string and Taskhub name, it will add another setting "TASKHUB_NAME": "xxx". <img width="434" height="249" alt="Image" src="https://github.com/user-attachments/assets/c3f5f25c-36d9-402d-be3c-a25a1d6b769b" />