However, I just found something that kinda bugs me.
On the CRM Opportunity pages it shows the title for an opportunity, which appears to default to the customer name.
Then I changed the customer.
But the title stays the same old customer name.
The Opportunity itself is updated though.
Thanks for reporting this. Title is generated when document is saved first. To have Title updated on every same, please add fields names in the Option field of Title field.