Hi. I have exported to spreadsheets customer data according to a specific tag. So if i add extra customer with the tag it is automatically added to spreadsheets. Now in spreadsheets i want to add columns that is not in odoo. So lets say the column that i add i name it gift. Next the the customer i then say yes or no if they received a gift or not. Now when i add new customer the information added does not move with the clients row. 

How to keep the manual data linked to the data imported from odoo.