We recommend running a sales report for each storefront site at the end of the day.
1. Go to Storefront Management tab
2. Next to the site, click on the arrow on the right hand side and select "Reporting" from the list of options
3. Download the reports there to view information regarding that stor
This will show what you began with, what you sold, and then what you transferred back. Use this to make any necessary adjustments to reconcile against your on-hand inventory.