The trick with the Legacy Design Proofer is that all of the spreads need to be the exact same size and you need to have a front cover and a back cover that are exactly half the width of the spreads. That way, the Legacy Proofer has all the files that it needs to display the flip book so it looks like a real book. If you are exporting from Album Builder, your export will automatically include two properly sized blank cover pages (for front and back).
Editing Your Upload
Add a cover to your album to create a flip book. Simply select "Create Faux Cover" from the Edit Revision tab.
**The flip book feature requires a front and back cover for your other spreads to stay in the correct dimension.
You have the options to use a swatch of black or brown leather, or you can use the color picker to create a cover. Once you make your selection, click Save Cover. Then select Save to save all changes
This is not recommended for Fundy Designer export, as a properly sized front and back cover will be automatically generated when you do a Legacy Proofer Export.