Obsolete data sources in dataflow lineage

JenM , you're right, the problem is not resolved.

v-kelly-msft , the workarounds you suggested don't address the issue at hand.

Here's my similar use case:

The Import from CDS dataflows has 2 entities from the same exact source (source A in the image below).  The lineage shows an old artefact of a previously used connection that is no longer active in this dataflows.  This is very confusing for the people responsible to maintain it!

When I go to Edit Entities, I can confirm via the Advanced Editor that both entitites are connected to source A.  

I also tried to go to the Settings view of this dataflow and it gets worst there!  There's a warning saying I can't refresh this dataflow because one of the credentials are invalid.  Well, the invalid one is NOT used anymore.  And to add to the confusion, there is also a 3rd source listed here which is neither used in that dataflow nor showing up in the lineage view.

I'm desperate to fix this and any help would be greatly appreciated!

Thank you.