Karl Baker

L46 is necessary as we have been [running MongoDB as a replica set since around April 2021](https://github.com/alphagov/router/pull/195), in order to enable the app to be replatformed. Previously, Router API knew...

@shanequint Did you have any success with this? I'm also running into the same problem for a relatively small graph (500K nodes) and can confirm that the edges _do_ exist...