We are barely starting with Odoo14 and are very frustrated with many things but this one is driving us crazy. -  We are a Basic distribution company - purchase and sell - we use Shopify for some orders. Otherwise, no EDI, manually entered orders through to delivery and invoice - not complicated 

 We have created Pricelists and attach them to correct Customers. If we create a new Pricelist and attach it to the correct customer, many others switch to the new one. No one seems to be able to figure out why.

So A customer has A Pricelist and all works. We create X Pricelist and suddenly  A customer has also got X list. Not all change - just some. 

I have googled and googled and cannot find any reason for this behavior - anyone able to give me some insight?