When using the Data360 Failed Schedule Email Notification Data Flow in version Data 360 Analyze v3.6.1, if any changes were made to the standard data flow, those manual changes will be lost after an upgrade to v3.6.2. If you upgraded from v3.6.1 to v3.6.2 and are using the failed schedule email notification data flow with manual changes, the updates will need to be made again.
Manual changes made in v3.6.1 or v3.6.2 will persist when upgrading to v3.6.3 or newer. This is a one-off issue specific to the v3.6.1 to v3.6.2 upgrade and won't occur with other version combinations for upgrading.
Full details on using and updating this data flow can be found in the Data360 Failed Schedule Email Notification Data Flow article.