Cannot remove a data source from Dataflow

[wabiadmintest]

Cannot remove a data source from Dataflow. Once a data source connection has been removed at the gateway level. We are not able to delete or remove the connection from the dataflow.

[chris_j_meurer]

I am experiencing this issue and it is blocking my conversion to use a new gateway - old datasources which are not relevant to the dataflow are not as "benign," as documented here, in my case. I need to destroy the dataflow, rebuild it with a new GUID and rebuild a large number of reports because of this.

[chris_j_meurer]

Link to "benign" behavior comment: https://docs.microsoft.com/en-us/power-bi/transform-model/dataflows/dataflows-features-limitations