private void updateOrderField(DBRecord pcRec, int orderValue) throws IOException {
		pcRec.setIntValue(ParentChildDBAdapter.ORDER_COL, orderValue);
		parentChildAdapter.updateParentChildRecord(pcRec);
	}
Use the given list to get the child order and update each record.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/module/ModuleDB.java