Hello @leggo
Thank you for reaching out to the Community regarding your issue, although I am sorry to hear that you are experiencing an issue with your balances. That is odd that you're having issues with duplicates. I'm not sure if it's related to the patch but it might be worth it to try loading a backup to see if we're having similar issues on the backup as well. I'll leave an article down below on how to do so.
https://www.quicken.com/support/how-backup-or-restore-your-quicken-data
Once you get a chance to try these steps, please let us know what you find. From there we'll better understand our next steps.
Thanks,
Quicken Francisco