Just a followup, fixed the issue. When trying to pinpoint the proper backup RAM chip, I didnt understand at first that the CPU D lines are all tied to the I/O pins on the RAM ICs and I so I checked the address pins on the CPU first. When I didnt get any continuity on anything I checked the address lines on the CPU and realized they matched up, but each line goes to both chips.
Then I realized the CPU D lines are tied to the I/O lines, and I was able to pinpoint the correct chip. Good thing about my error is that at least I verified that continuity was good on pretty much everything.
Anyhow, I swapped the culprit RAM and it worked. Thank you so much and I have some info to add to your repair logs if you would like-- the backup RAM location for the MV1C board.
D7-D0 = RAM 2, which is the upper RAM IC in the backup area
D15-D8= RAM4, which is the lower RAM IC in the backup area