remove workorder id again from the WO reference, keeping it on operation

frepple/controllers/outbound.py

@@ -2567,7 +2567,7 @@ def export_manufacturingorders(self):
                     except Exception:
                         wo_date = ""
                     yield '<operationplan type="MO" reference=%s%s quantity="%s" status="%s"><operation name=%s/><owner reference=%s/></operationplan>\n' % (
-                        quoteattr("%s - %s" % (wo["display_name"], wo["id"])),
+                        quoteattr(wo["display_name"]),
                         wo_date,
                         qty,
                         state,