The process exports prices that have been received or changed since your last export, and price formulas and inactive prices that have been flagged for export. Once you export a price, it is flagged as processed.
If you have more than one user on your account who has the Price Export role, we recommend that you coordinate your exports. Any time any user on your account exports prices, those prices will be flagged as processed and will no longer be available for export as unprocessed prices.