In the errata for Historical Turning Points: New Dallas found on this forum we get "Additionally, the Rifleman II (Kataga) record sheet has been replaced with the Victor (Kataga)." as well as a record sheet for the Victor (Kataga).
Does that mean the Rifleman II (Kataga) found in the original Historical Turning Points: New Dallas publication is removed from canon? So current canon is that it is not a canon mech and never existed to begin with? MUL only lists Victor (Kataga) which seems to imply that.