After upgrading to a new version of Miva Merchant, you always have the option of restoring your original installation. Select the "Restore Miva Merchant installation" radio button from the advance page and click the "Next" button. The "Restore Miva Merchant from"drop-down list including the dates you've performed an upgrade will be displayed. Choose a date from drop-down list and click the "Next" button to complete the operation. Miva Manager will restore the installation you had on the specified date and time.