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See : What actions do I need to take?
There are no actions that you need to take. If your gateway currently uses one of the SKUs listed in previous section, we'll migrate the gateway for you. When we perform the migration, the migration is seamless. There's no downtime expected. You'll be notified in advance about migration for your gateway. We recommend that you don't change your SKU manually in anticipation of SKU migration unless you want to upgrade to a higher SKU.
Hope this clarifies.
Thanks,
Kapil
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