I changed the table "eav_entity_store" in my DB so i get a customer_increment_id like this "2015_00001". This works fine and every new customer get this id (2015_xxxxx) in "customer_entity.increment_id".
The normal value for this colmn is NULL and the system use entity_id for the customer_id.
Now i want do print this increment_id in my invoice/shipping/creditmemo-PDFs instead the normal customer_id. Is there an easy way to get the increment_id from the customer_id?
I have the place in my Abstract.php to print the id, but i don´t find the value for the increment_id. I only got the normal custumer_id [ $order->getCustomerId() ].