Find what products are out of stock in store to transfer from basement "warehouse"

[BarberSupplier]

I am currently looking for a solution to my problem and I can't find the answer anywhere. I want to check what products I am out of stock in in my brick & mortar location, but still in stock in my basement storage so I can transfer to my store. I have the storage saved as a second location. I can check both locations separately but can't find how I can possibly filter out what's in the store vs in storage which would be much easier for me to see what I need to bring upto stock up my store instead of just guessing. Please, any ideas would be amazing. Thanks!!!

[BerndFehrenbach]

Hi. Are you still looking for a solution since our request is over 2 years old?