Hello @today32
Thank you for reaching out on the community and telling us about your issue. I was taking a look to see what I could find and did find the setting you were looking for I believe.
With the circled notification preference off you're able to delete non reconciled transactions without having to confirm it each time. If the transactions are reconciled it will still ask you to confirm the deletion but that should work since you're likely to reconcile after deleting transactions.
Please let us know if this helps resolve the issue for you.
Thanks,
Quicken Francisco