That is odd, @deva. I’d start by trying to restore the sheet to the master. You can delete it by just deleting the tab from your spreadsheet or you can use the Tiller Community Solutions Add-on’s Manage Solutions/Restore workflow to just overwrite the version that you have.
If you don’t have a lot of data you’ll miss in the Budget Journal sheet, I’d consider deleting that beforehand and letting the restore process reinstall it… though this is not required.
Good luck.