Hi Brian--

whew, what a mess!

I'm having a hard time identifying a specific problem, but I did notice
this surprising sequence:

On Mon 2020-03-30 08:03:20 +1100, Brian May wrote:
> subgraph "cluster_id:pr-wspdigital/bupaoshc/88@bitbucket.org" {
> "pr-wspdigital/bupaoshc/88@bitbucket.org" [shape=folder];
> "1584434229.8921_0.wspdigital:2,S" [shape=note];
> "1584434231.8924_0.wspdigital:2,S" [shape=note];
> "1584434232.8927_0.wspdigital:2,S" [shape=note];
> "1584434234.8930_0.wspdigital:2,S" [shape=note];
> }

[…]
> "1584434229.8921_0.wspdigital:2,S" -> { "pr-wspdigital/bupaoshc/88@bitbucket.org" } 
> "1584434231.8924_0.wspdigital:2,S" -> { "pr-wspdigital/bupaoshc/88@bitbucket.org" }
> "1584434232.8927_0.wspdigital:2,S" -> { "pr-wspdigital/bupaoshc/88@bitbucket.org" }
> "1584434234.8930_0.wspdigital:2,S" -> { "pr-wspdigital/bupaoshc/88@bitbucket.org" }

The surprising thing about this output is that there appear to be 4
copies of message that References: itself!

And, many many other messages also reference that message too.

Would you be willing to send me the full headers from one of the above 4
files so i can verify that this is correct?

I have no idea whether this is part of the problem you're seeing, but it
is certainly unusual.

        --dkg