List of values the Server extension preserves

The Server extension will preserve certain values. Below you will find a complete list of values that require the Server extension. The server extension is not compatible with SharePoint 2003

Note: You do not need the server extension in Microsoft 365, but you could still need it on your source or destination if it is on-premises. It's not only recommended to preserve these values, but it can also increase the performance during the migration.

For example, using the above table, you can see that if you wish to preserve the value Authors (Modified by) on Draft Versions, the Source (i.e. starting point of your migration) can be any version of SharePoint, but if the Destination (i.e. where you are migrating to) is either SharePoint 2010, 2013, 2016, you need a Server extension that must be installed on the Destination version of SharePoint.

Looks like you need the Server extension? Use the Server extension checklist to ensure things go smoothly, then follow these instructions.