Is this an indication of a short?

Thanks Bill. I will try that today. And yes, both lanes stay on even before trying a start.

Hi,

A quick write up of how this developed. First, both lines on, as I said. Then, I disconnected CPS1, and lane B turned off after powering up, but lane A still on. Then disconnected CPS2 (connecting CPS1) and Lane B turned off. 
I then reconnected everything and both lanes turned off. After that, engine started perfectly and all indications and logs showed normal operation.

Only thing I can come up with is that the connectors somehow became a bit unsat. I'll keep an eye on this in case is an issue.

Thanks again, Bill. That was golden...

I hate it when things mysteriously fix themselves.
Without a definite cause, the problem may return in flight.
A loose connection is highly unlikely and would only disable one Sensor, Not Both!
What you did do is reposition the wiring in the process of removing the connectors.
A short in the wire harness due to chaffing could ground the power supply to both sensors.

I recommend that you re-investigate the problem and look closely at the wire harness near the CP sensors for any damage.
Did you cut any Wire Ties in the process?  If aggressively tightened, they can become pinch points.

Thanks Bill, and you are totally right. I did cut some ties that were quite tight, and before operating any further will review all connectors for this issue.