RM_DISPRESULTS Reviewer and Approver data showing incorrect IDs?

Hello, I am attempting to construct a LiveReport that shows a list of userid's associated with each disposition search. The reviewers are configured in RM to be assigned dynamically based on a category attribute value that stores a group for 1st set reviewers and another group for 2nd set reviewers.

It does not appear that the user's under these groups are actually being tracked and stored in any of the RM tables. The users I see in the RMDISPRESULTS reviewerID ID2 and approver appear to be sysadmin users that possible have full perms to system as well as being Records Managers, sort of like a default and this seems to be true as the Rec Man gets the disp notifications whether they are assigned in the group or not.

The SDK doc has the definitions of these columns cut off and it's been a doc issue for every version I checked so far. Looking for some confirmation if my findigns are correct. If so, I can't use this table's reviewer ID's and need to make a query to get them out of the llattrdata table instead. I can do that but the table has billions of rows so it will really slow down this report!