Yes, huge changes:Was there any significant change to Finnair routes?
FINNAIR Schedule change 2022/2023 - impact on Rewards Bookings
If , like me , you have a trip to Europe booked via Tokyo and Helsinki next year note below. Particularly worrying given QFs seeming inability to re-ticket reward seats in a timely manner. Note change to Haneda. If flying into Narita - unable to transfer to Haneda based on current restrictions...

You probably won't find an alternative, sorry. Now that Qantas has lost Qatar availability, the OWA is quickly becoming less and less viable because it is getting so hard to get to/from Europe on a oneworld carrier with Cathay largely out of action, Qatar gone, Finnair cancelling routes, Qantas rarely releasing seats etc.