X-Man #75-FB shows what Harvester was up to right before and after his arrival (and expands on it) in X-Man #71.
HARVESTER II
*XM 75 (25:3)-FB-BTS
*XM 71 (1-5:2)-BTS
*XM 75 (26:1)-FB
*XM 71 (5:3-5:5)-OP
*XM 75 (27-28)-FB
*XM 71 (5:6)-OP
*XM 75 (29:1)-FB
*XM 71 (6)-BTS
*XM 75 (29:2)-FB
XM 75