During the migration from PC 1.0 to PC 2.0, item plans and addons are created. It is important to know how the ids are mapped with the price points.
The plan id and addon id linked to a subscription will not change. While the site is in PC 1.0, every subscription will be linked to plan id. In PC 2.0, subscriptions will be linked to item price id.
In this PC 1.0 to PC 2.0 migration process, we create a plan item and the relevant PC 1.0 plan id becomes item price id under this plan item.