I have a SharePoint 2010 document library with >7000 xml documents created from infopath forms(Infopath 2007). Now i would like to promote few fields in the form to the SharePoint document library. I could do this only for documents created from the upgraded form, but not for all previously created documents. Although re submitting of old forms will work,It is not possible for me to update all 7000 records to promote the values to the column. Is there a much easier solution, considering the fact that this changes need to be implemented on a production environment too.
Note:The promoted columns will be used to generate graphical report. Any solution acceptable.