82E74 schematic question

[Dan Korneff]

Hey guys,
I'm in the process of cloning all of the center section cards and have a question about the 82E74 schematics.
This card spans 2 separate schematics, one for logic and one for analog, which interconnect. In section B7 of the logic schematic, the junction of D9 and RP15 pin 9 send to LMON_BUS_RMON_OUT. I can't find the associated connection on the analog portion of the schematic. Also just below that is a point for RMON_BUS_LMON_OUT. Can't find that one either.
I have a 74 on hand. When I beep it out, I can't find it either. Am I missing something? Is it an obsolete junction?
Everything else seems to line up on the card.
Schematics attached for reference.

[Dan Korneff]

Also, does anyone know if a 74 card (8K) is backwards compatible with a 154 card (6K)?
Although the pins are labeled differently, the functions of the pins appear to be similar on the schematic.

[RoyMixer]

I'm pretty sure mine has a 154 in my 8K- I'm noticing incomplete schematics in a few areas.