If you have used the Google Sheets Add-on for OA (Manage and import OA and Wholesale buys with ScanPower Google Sheets™ Add-on), then this is the appropriate workflow for listing items from the buylist.
With desired batch selected, scan or enter the item (MSKU, ASIN, UPC, or title) into the listing field at the top of the screen:
A dialog box will come up allowing you to choose to list from your Buylist or, if applicable, to replenish from inventory:
Enter the desired quantity you wish to list. Any unlisted quantity will remain on the buylist for future listing.
By selecting the carrot in the MSKU field, you will be able to select an existing MSKU or create a new one.
Click +Add to Batch