Order Consolidation: “Address does not belong to Customer”

[AugustMiller]

I've imported a number of orders, as though they were made by guests.

Once a customer creates an account on-site, we want to consolidate any prior orders into their new user-connected customer.

The consolidation process runs, but bails because the new customers/users doesn't own the addresses.

Is there a recommended method for allowing addresses to be discovered/fetched from an order, which has been completed (and for which the associated addresses are copied into a kind of hidden/disassociated state)?

[AugustMiller]

This looks like an issue with validating the order, after it's been completed… is that necessary?

For reference, disabling element validation when the order is re-saved allows the “non-owned” addresses to be preserved:

https://github.com/craftcms/commerce/blob/develop/src/services/Customers.php#L317