Sync Minecraft Purchased from old ipad to new ipad

We recently purchased a new ipad for my son. On his older ipad, he has Minecraft where he purchased a few resource packs by buying mcoins and then buying the resource packs. He has then installed minecraft on the new ipad, logged in with the same microsoft
account, and the resource packs are not showing up.

I went through the steps of "save to Microsoft account" on the old ipad, and have logged out and back in on the new ipad, yet the resource packs still do not show up.

How can I access the resource packs on the new Ipad? I see no reason I should have to re-purchase them.

:)