Been trying to track down this silly bug for... far too long. Basically two fields from the scanner aren't getting copied to the tracking table, as a result, the automatic generation of network hierarchy is failing (it can only assert that the modems belong to the CMTS, not that they exist on a particular channel). It would be so much more efficient to have a testing framework that could scan a mock-up of a 30 or 40 modem plant for this kind of thing. Oh well.