1) If both of your PDFs have the same schema:
You can first export the xml data using ExportData operation in an xml variable.
And then use the import data operation to import the data into the other PDF
2) If the two PDFs have different schema:
Use ExportData operation to export data in an xml variable.
Then you can use "set value" operation to set the values of the fields in the other pdf with the values from the xml variable.