1how to find a missing survey
2 how to find archived data missing from existing survey
1] Do you have multiple users on your account? is it possible that someone else has changed your rights to the ‘missing’ survey so that you can no longer see it? Whoever has ADMIN rights to your account should be able to help you with this.
SurveyGizmo surveys do not go missing. If you have rights to it, you should be able to see your survey in either the ALL SURVEYS, DELETED, or ARCHIVED folders. You can review the SurveyGizmo documentation for details – https://help.surveygizmo.com/help/teams
2] Response data within a survey cannot be archived. You can change the status of individual responses to COMPLETE, DISQUALIFIED, or DELETED. You can use the SHOW: ALL | FILTERED | DELETED links at the top of the INDIVIDUAL RESPONSE page to view the desired responses. Review the SurveyGizmo documentation for details – https://help.surveygizmo.com/help/viewing-responses