Are you Syncing to Mobile/Web?Do you use the Mobile app on your smartphone or the new Quicken on the Web feature?
If no, turn Sync off completely.
Mac: https://www.quicken.com/support/how-edit-or-delete-your-cloud-datasets-quicken-mac Windows: https://www.quicken.com/support/how-edit-or-delete-your-cloud-datasets-quicken-windows