FDFMerge and FDFMerge Lite do not support FDF Templates. The Form Data Format (FDF) supports a construct known as ‘Templates’; where, within the Acrobat environment, the FDF file will cause additional pages to be added to the PDF file as they are needed. FDFMerge and FDFMerge Lite do not support FDF Templates and will not add additional pages to a PDF file.