Vin65’s inventory management system is really rudimentary at this point. Managing multiple inventories, receiving invoices, transferring, depleting, etc etc is really clunky.
Unless we’re talking only a few cases here and there, you’d probably be better off using another system to keep track of such inventory, such as your accounting receiving/payables package (ie Quickbooks, Sage, etc)
If you’re really hell bent on keeping everything inside Vin65, I would create a order type called Wholesale and a promo for 100% off orders with order type Wholesale. Then just ring out the wine using either the POS or the admin panel. Note that this is for inventory depletion only. If you’re looking to do invoicing and billing through Vin65, I can’t help you.
On your dashboard, sales are broken out by order types, so it shouldn’t mess up your dashboard totals, and for reporting, you can just remove the wholesale order types to keep things clean. Hope this helps!