You can access all of your exported, imported, and snapshot files by clicking Files under the Customer menu.  

Inventory Snapshots

Whiplash automatically generates a snapshot of your current inventory at midnight each day, in the timezone for each warehouse where you have stock. Snapshots feature Expired, Pickable, Backstock, and Misc (damaged + missing + transfer + reserved) stock.

Imports

When you import a file, you can access the original import file at any time in the Imports tab, for reference.

Exports

All of your manually generated exports are available in the Exports tab. Additionally, you've got tabs separating Order Exports, Inventory Exports, and Invoice Exports.