Hello

I have a client who I need to invoice the same invoicing address but with several different shipping addresses. so I've setup four customers, all with the same invoice address and each one has a separate delivery address. 

The problem I've got is that in order to tell them apart when selecting the customer to invoice i've used the 'display name as' to say, for example:

Company (Site 1)

Company (Site 2)

Company (Site 3)

Company (Site 4)

But this then appears on the top of the customer's address line which I don't want them to be able to see. 

Is there another way? Or a way to have a 'tag' or memorable name which means something to me when selecting the customer but wont show on their invoice?

Thanks