I recently created a new inventory item, i use custom expanse on it but when i do new invoice and sell this item then it is accounts goes to Inventory - sales but not my custom one ??
It still works on older items.
Unless you mis-typed, you’ve answered your own question. You said you used a custom expense account. But you seem to be expecting the sale to post to a custom income account instead of Inventory - sales. Double-check your inventory item definition screen.
haha oki im an idiot 
i found it out