Okay. To use your example I had to change the data source and the query because I don't have access to the server or the database. I changed the data source to point to the local server and tempdb and then used the query you provided earlier as the dataset. Using that setup I can't duplicate the issue you are seeing. If you attach the create table and insert statement for the table you reference in the example report I'll create that table with that data in a local database and see if I can duplicate the issue. I'm attaching the project with the changes I made and it is working as desired.