Meraki side EMEAR response was to use disti files as I suspected it would be. Lets check again next week after Meraki has fullfilled my wishes. However I feel that external ITAM system, CRM or whatever is preferable to locate all data involved.
serial numbers are sent to the purchasing party via the daily fulfillment log email - this can be sent by distribution to the customer if necessary. The order can also be claimed by the order # and search with the order # for the shipping notification email.
I marked this thread closed. Thanks for your input.