If you think that you will frequently run a paradata concatenation on the same set of files, then you can use a specification file that contains the parameters of the concatenation. Once you have specified the input and output logs, then you can select Save As from the File menu. This will create a PFF file with the specified settings.

From the same File menu, you can select Open to load the parameters from a PFF file.

Having a PFF that describes your program parameters also allows you to run a production concatenation.