I've been reconciling my CC with a neg balance for years. I can now enter the neg Ending Balance in the Use Statement Balance but when I go to the next screen where the items are listed the Statement Ending Balance is chown as positive, throwing the reconciliation out of balance.
Here's a loom vid of this: https://www.loom.com/share/69bb42255efd4f38b48e0f27a4437b54
I'm running Mac OS 12.7.1 with Quicken version 7.4.2 Build 704.51578.100