Hi,
I've got some experience with the 613's predecessor, the 612, so I assume they're roughly similar. So to your questions:
1. What you need for Ultimation testing is the 354 test set. As the balanced audio and the VCA control voltage travel down the 10-way ribbon, you need the 354 to plug into this. The VCA voltage in the 613 box, from the blue fader, won't supply a voltage to the Ultimation card.
2. Momentaries are normal.
3. You'll have to monitor from Insert, pre fader.
4. Not sure.
5. The switch, I believe, connects the resistors to the Mic input, to check for noise in the mic pre in the absence of signal.
Hope this makes sense.