I have a product A, price 70 with default tax 15% (included in the price)

Now I have a fiscal position B2B replacing the 15% (included in price) with TAX 15% (NOT included in the price)

I have a pricelist B2B: Product A, fixed price 55

I create a quotation to a customer using this pricelist and add Product A. Unit price shows 55, Tax 15% (included), subtotal 47.83

Now from the Other Information tab I set the fiscal position to B2B. The tax changes to 15% (not included)  and the subtotal is 55, Total: 63:25. This is exactly what I want.

But now if I have the fiscal position set up on the customer instead of setting it manually every time this fails.

It shows unit price: 47.83, tax 15% (not included), subtotal 47.83, Total: 55