I have a bunch of subscriptions I need to change the EndDateCondition from being fixed period to aligning with subscription end. Since you can't update discounts, I need to remove the discount charge and add a new one. Any examples on how to do this with the REST API? I'm guessing I can call /v1/subscriptions/<subscription id> and have a json payload with a remove block to remove the discount and an add block to add a discount.
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