Form appears blank when submitted

I recently ran into an issue with a form newly created in Adobe Livecycle where the data from each of the form fields is erased when the user submits the form via email (as a pdf). The form itself is quite simple with 7 text fields, 2 date fields, and a button to submit the form via desktop email application. There is no JavaScript or FormCalc scripting.

I am using Adobe Licecyle Designer ES 8.2 on Windows 7. I have created several of these forms in the past with no such issues. Can anyone help?

Thanks,

Brandon