Once you merge two customers or jobs, you can't
Situations where you can't merge a customer or job
You can't combine more than two names at a time.
You can't combine customer names if both names have jobs. You must first
delete or move the jobs from the customer name you want remove.
How do I do this?
You can't merge a customer name with a name from a different list, such
as merging a customer with a vendor.
Click the Customer Center.
Click the Customers & Jobs tab.
Double-click the customer or job you don't
want to use.
In the Edit window, change the customer
or job name (at the top of the window) to the same name as the entry you're
combining it with.
Click Yes to confirm that you want to merge the
two names under the same name.
ways to remove a customer or job
What if a customer is also a vendor?
Changing information about (editing) a customer
Changing information about (editing) a job