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:

• document-page-1.pdf
• document-page-2.pdf
• ...
• document-page-10.pdf

the resulting order will be wrong:

• document-page-1.pdf
• document-page-10.pdf
• document-page-2.pdf
• ...

Therefore, always add zeros in front of your page numbers to ensure proper ordering. For example:

• document-page-001.pdf
• document-page-002.pdf
• document-page-003.pdf
• ...
• document-page-010.pdf
• document-page-011.pdf

The page numbers can exist anywhere within the file name so long as there exists the necessary trailing zeros.