Partials & done

Large parent orders often fill in slices. Watch 14 (CumQty) vs 38 (OrderQty from original).

Pattern	150	39	Read
Working	0	0 / 1	Acknowledged
Partial	F	1	14 < 38
Filled	F	2	14 = 38
Canceled rest	4	4	Done with remainder dead

Bob's OMS showed flat when only half filled — UI watched 39=2 on the wrong child ClOrdID. Parent/child 11/41 chains matter on multi-leg venues.

After the last fill, you may still receive 150=0 heartbeats of state — idempotent handlers win.