Query no longer working

edit

My programming makes a query each hour to retrieve new MLS entries. This query now returns zero records. I am not sure why it is doing this. Here's an example query.

$results = $rets->Search('Property', 'RE_1', "(L_Status=1_0),(L_UpdateDate=2016-03-31T14:22:18.3Z)");

Oddly, this query still works.

$results = $rets->Search('Property', 'RE_1', "(L_Status=1_0),(L_UpdateDate=2016-03-31T14:22:18.3Z)");

My username is billdunn