Export data stored in InfoPath forms

Scenario

Environment: SharePoint 2007

1. I have an InfoPath form that was about 600 fields.
2. The InfoPath form is NOT browser based
3. Currently I do not have the option to change the InfoPath form to set property promotion.
4. Need to migrate data from current InfoPath system.

If I download the saved InfoPath xml file and try to import it into excel I get a data truncation error (which does not tell me which field is faulting).

Is there any third party tools that can go through an InfoPath document library and export the data into a csv file.  Essentially I need some kind of automation since there are around 2000 forms filled out.

Thank you.

Anand