If you run this query in Data Explorer it would appear that both queries run since the message window reads...
(1 row(s) affected)
(555 row(s) affected)
...but only the first result is displayed or exported (download results).
It would be nice if all result sets where displayed and exported. Or at least exported.
If N number of result sets seems like asking for trouble, perhaps a limit > 1 would be acceptable.