Hi MangioQui
I apologize for any inconvenience caused.
Unfortunately, I'm not sure if I exactly understand what you mean. As far as I understand, you are creating the three inventories from Stock Central, and for each one you set 10 items, so the total stock of the variation it's 30, which is correct.
On the other side please, can you explain this a little bit more? 'If we enter the card to delete 2 warehouses they don't exist ... So we don't know how to do it.!'
Maybe some screenshots reproducing the issue will help.
Best Regards,
Andrea.