Hackers Help: Do the new KIVIK slipcovers fit old KIVIK?

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I bought an IKEA KIVIK sofa 2 seater like 3 years ago. The cover is fixed with pins so I’m not able to replace it.

My question is if I remove this cover/pins and buy the removable KIVIK slipcover and attach it to the sofa with pins again, will it be okay with size and everything?

~ Ahmed