### Discussed in https://github.com/apache/airflow/discussions/24548

<div type='discussions-op-text'>

<sup>Originally posted by **don1uppa** June 16, 2022</sup>
### Apache Airflow version

2.2.5

### What happened

I have a dag that starts another dag with a conf.   
I am attempting to start the initiating dag a second time with different configuration parameters.   I it to start the other dag with the new parameters.

## What you think should happen instead

It should use the new conf when starting the called dag

### How to reproduce

See code in squsequent message

### Operating System

windows and ubuntu

### Versions of Apache Airflow Providers

N/A

### Deployment

Docker-Compose

### Deployment details

_No response_

### Anything else

**Work around for now is to delete the previous "child" dag runs.**

### Are you willing to submit PR?

- [ ] 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)
</div>
from airflow.models.baseoperator import BaseOperator, BaseOperatorLink
from airflow.models.dag import DagModel
from airflow.models.dagbag import DagBag
from airflow.models.dagrun import DagRun
from airflow.models.xcom import XCom
from airflow.triggers.external_task import DagStateTrigger
from airflow.utils import timezone
from airflow.utils.helpers import build_airflow_url_with_query
from airflow.utils.session import provide_session
from airflow.utils.state import DagRunState
from airflow.utils.types import DagRunType
XCOM_EXECUTION_DATE_ISO = "trigger_execution_date_iso"
XCOM_RUN_ID = "trigger_run_id"
if TYPE_CHECKING:
    from sqlalchemy.orm.session import Session
    from airflow.models.taskinstancekey import TaskInstanceKey
    from airflow.utils.context import Context
class TriggerDagRunLink(BaseOperatorLink):
    """
    Operator link for TriggerDagRunOperator.
    It allows users to access DAG triggered by task using TriggerDagRunOperator.
    """
    name = "Triggered DAG"
    def get_link(self, operator: BaseOperator, *, ti_key: TaskInstanceKey) -> str:
        
        
        when = XCom.get_value(ti_key=ti_key, key=XCOM_EXECUTION_DATE_ISO)
        query = {"dag_id": cast(TriggerDagRunOperator, operator).trigger_dag_id, "base_date": when}
        return build_airflow_url_with_query(query)
class TriggerDagRunOperator(BaseOperator):