Topic: Buying a game that's include in the extra tier

Hey guys.
I currently have the essential plus subscription And I want to purchase rainbow six siege that's include in the extra tier.
When I try to purchase the game in its standard version ($29.99) it sends me to upgrade the subscription to extra ($30.79).
My question is if I make the purchase through the game page and not only upgrading the subscription then I actually bought both the game and the upgrade?
I don't want to just upgrade because if the game is removed from the library I won't be able to play it anymore and I want it to stay mine.
Thanks for the help.

https://ibb.co/XxR79XY

Image that shows the checkout page.

What happens when you click the bin/delete icon on the ps+ extra upgrade in your screenshot?

Nothing.. i can only delete the game.

https://ibb.co/x7S3YDv
Look at this image - the funny thing that it's actually shows the discount amount of the game.
Maybe there is an grey area that when you upgrade through buying a game you get the game permently and the subscription until it ends?