SELECT customer
SET ORDER TO TAG cid_cseq
SCAN WHILE cust_id = m.cust_id
      SELECT oTemp
      LOCATE FOR cust_seq = customer.cust_seq
      SCATTER MEMVAR MEMO
      SELECT collat
      GATHER MEMVAR MEMO
ENDSCAN

You're right about the locate I had forgottne it. But event hough the customer is moving and oTemp is moving, Collat is still not moving.