FSAPPLICATIONDATA_ being saved unnecessarily

Hi there,

Each time I save my form the form data from the recording in Workbench shows the following tags being saved:

<xfdf:field xmlns:xfdf="http://ns.adobe.com/xfdf/" xmlns:xfdfi="http://ns.adobe.com/xfdf-transition/" xfdfi:original="FSAPPLICATIONDATA_">.........

<xfdf:field xmlns:xfdf="http://ns.adobe.com/xfdf/" xmlns:xfdfi="http://ns.adobe.com/xfdf-transition/" xfdfi:original="FSTARGETURL_"/>...............

The contents of the FSAPPLICATIONDATA_ tag contain a huge amount of seemingly meaningless data that is not used for anything.  Each time I save this data is increased, often doubling the size of the xml to a point where the system cannont handle it and crashes.

Can anyone tell me how to prevent this data being submitted?

Thanks,

Kieran