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Order IDs in BigCommerce are incremental and so StagingPro does not keep the original order number. It will still migrate the order but it will have a different order numberincrementally assigned each time an order is created. Hence the original order number cannot always be retained. It is also because of this incremental behavior that records in the destination store cannot be deleted thus having the effect of the destination store continually growing with each migration that occurs. It is therefore recommended not to migrate orders unless it is absolutely necessary.
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