When this option is selected, all files found in the FTP directory will be merged into 1 before processing.
Files will be sorted by name, so a logical naming convention must be used. Remember that file sorting sorts by alpha numeric, so if your document contains more than 9 pages and your files are named such as:
the resulting order will be wrong:
Therefore, always add zeros in front of your page numbers to ensure proper ordering. For example:
The page numbers can exist anywhere within the file name so long as there exists the necessary trailing zeros.