Transferring Account from one apple id to the other

[Jan]

Hope this helps:

New Apple ID, Old G-Mail Account

All purchases are tied directly to the Apple-ID they were purchased on. While it is possible to share the app purchase itself via Family Sharing, in-app purchases and subscriptions is not shareable. Your subscription is however tied into our systems as well, so if you just sign in with your linked account, you should be able to access your subscription.

New Apple iD, change subscription account

Not needed :) Just link the account with IFC (Infinite Flight Community), cancel the subscription. Once it expires, just make sure you’re signed into your Community linked account and repurchase using the “new” Apple-ID.