We would like to export a list of our customers, edit details (change parent) and then import the list back into QuickBooks, can this be done?

We noticed that we have 2 parent customers that are the same one is called 'Retailers' the other 'Retailer' because there are multiple sub customers under each parent we are unable to merge the 2 parent customers. Is there a way we can export a list of customers to excel, edit the parent and re-upload the list?