utkarsharma2 opened a new issue, #41432:
URL: https://github.com/apache/airflow/issues/41432
### Apache Airflow version
2.9.3
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
Suppose we start Airflow with the following DAGs located in
/<user_root>/airflow/dags:
abc.py
xyz.py
Later, we decide to change the default DAG folder to
/<user_root>/airflow/dags_backup/, which contains different DAG files, by
setting the environment variable
AIRFLOW__CORE__DAGS_FOLDER=/<user_root>/airflow/dags_backup/. After restarting
the scheduler, the new folder includes the following DAGs:
efg.py
hij.py
At this point, the Airflow UI will display all the DAGs from both sets of
files (abc.py, xyz.py, efg.py, and hij.py), even though the current dags_folder
no longer contains the original abc.py and xyz.py.
Note: This behavior has been observed even for active DAGs.
### What you think should happen instead?
The expectation is that the airflow UI should only dags belonging to the new
dags folder `/<user_root>/airflow/dags_backup/`.
### How to reproduce
1. Start Airflow with some dags in the `dags` folder.
2. Change the default dag folder using `AIRFLOW__CORE__DAGS_FOLDER` to
another folder containing a different set of dags.
3. Notice both sets of dags are visible on the UI.
### Operating System
Ventura - Mac
### Versions of Apache Airflow Providers
_No response_
### Deployment
Virtualenv installation
### Deployment details
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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