Hello there, Di66. It appears the system is experiencing a date-mapping error triggered by the start of the new tax year. It’s essentially mislabeling the 25/26 and 26/27 periods and defaulting your invoice dates to the last day of the previous tax year (April 5th) until the update fully processes.
To troubleshoot this, please try logging in using a different web browser or through an Incognito/Private window. This will help determine if the problem is caused by outdated cached data in your current browser.
If the issue persists, I recommend contacting our support team for further assistance. They have the tools to review your account in more detail and provide the necessary fixes. You can contact them here and check their support hours: Get help with QuickBooks products and services.
If you have any other concerns, please click the Reply button.