PDF must be saved according to the orders of 1 front, 1 back, 2 front, 2 back, 3 front, 3 back…
User must comply with PDF saving instructions and specification (Print quality, 6.0 or higher, layer activation and etc.)
If user is creating design with cutting line, please be sure to enter the bleed size when saving PDF file that serve as cutting margin to avoid cutting mistake.
When user save PDF file using illustrator without changing the setting, the page order will be saved automatically by the system.
However, if user is saving or working on the design in a random way, user can still arrange and save the page according to their desired order prior to sending the file for printing.
User can utilize Adobe Acrobat Pro to change page order even after saving PDF file.