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You've already opened the accounts, so closing them won't affect your AAOA and will just diminish your available credit, which could affect your utilization. My understanding is that Fico 8 uses all your accounts, regardless of status, to compute AAOA.
If you treat those accounts well, they will help you over time. Comenity will grow.
Just don't do what I did, and open 10 store cards.