InfoPath Dev

Is there any way to run a query that only returns records where certain fields are blank? I have a form that a team will use to only pull records that have not yet been completed, so a text field and date field will always be blank for those records. I tried filtering data, but as soon as they complete one of the ...

A horizontal line always appears under the introduction text in the e-mail submitted by my Infopath form. I removed the text "This message was created by a Microsoft Office InfoPath form" but I can't find a way to remove the horizontal line.  

Is there a way to control which fields are exported to Excel when using "Infopath actions/Export forms to Excel" from within an Infopath folder in Outlook?