Order A1 has an item of variant V1 of a product P1. If I remove V1 from P1, what happens to the variant_id in A1? Is it still valid? How about if I add back V2, which is essentially the same as V1, will the variant_id in A1 be updated?
Were you able to test this?
Orders are like a snapshot, the line item won't be removed but you won't be able to look up the variant by its ID.Adding back the variant won't update the order either.