--- title: "Guidelines for Upgrading, Backing Up, and Restoring Data" canonical: "https://docs.infoblox.com/space/nios85/35480069/Guidelines+for+Upgrading%2C+Backing+Up%2C+and+Restoring+Data" format: markdown --- You should take into consideration the impact on scheduled and approval tasks when you perform any of the following: - When you upgrade from previous releases to NIOS 6.7 and later, the appliance converts all valid punycode data to IDNs for DNS resource records and DNS zones. When you have a fresh installation of NIOS 6.7 and later, the appliance converts all valid punycode data to IDNs for DNS zones only. It retains punycode data for resource records. - Upgrade the NIOS software: In a full upgrade, all scheduled and approval tasks are deleted. In a lite upgrade, scheduled and approval tasks are not deleted. - Back up the NIOS database: All scheduled and approval tasks are backed up for troubleshooting purpose. - Restore the database: Scheduled and approval tasks are not restored. - Promote a Grid member to a Grid Master: After the promotion, all scheduled and approval tasks that are past due are executed immediately. - Revert the NIOS software image: After the revert, all scheduled and approval tasks that are past due are executed immediately. - Restore data from the Recycle Bin: To restore a deleted parent object (such as a network) that contains a child object (such as a DHCP range) associated with a scheduled or approval task, you must first delete the scheduled or approval task for the child object. # Related topic [*Scheduling Tasks*](https://infoblox-docs.atlassian.net/wiki/spaces/nios85/pages/35446174)