I would do no more than submit proof she submitted biometrics before.Hello, I'm about to submit sponsorship application for my wife, she did visitor visa request in 2020 and therefore she submitted her biometrics and got letter stating that her biometrics are valid for 10 years, but now when i search for her biometrics on IRCC website i couldn't find it, shall i pay again for her biometrics or submit letter as proof that biometrics are valid for 10 years? Thank you
Note, previously IRCC always required PR applicants to get new biometrics. During covid they have waived this and are accepting previous. Because formally it's a temporary special measure, there are sometimes oddities or minor confusions in processing and especially in what the update pages say (they may say biometrics needed when they aren't).
Personally I'd pay and wait for them to refund (they do seem to do this consistently) because once in a while they ask for payment before they realise it was already paid. But it probably makes no difference.