Do not update shipment cost method to Null if it is already Null
The migration update the sales already updated each time the sale is registered. On large table, this can be slow.
This instance will be upgraded to Heptapod 18.5.1 on 2025-11-13 between 17:00 and 18:00 UTC+2
The migration update the sales already updated each time the sale is registered. On large table, this can be slow.