The ShareGate migration tool carries your associated permissions during a migration and will attempt to preserve their integrity from the source to the destination whenever possible.
This article explains what happens to your permissions when doing an Import from Google Drive migration.
Note: When you migrate to a site associated with a Microsoft 365 group, the owners of your group are automatically granted site collection admin permission on that site. This means that they have access to everything in the site, including items with custom permission levels.
Your users and groups are automatically mapped at the destination. This association is done through the SharePoint people picker to preserve your permissions and Person or Group metadata values. For more information, see Users and groups association (automatic mapping).
Mapping permission levels allows you to replace the permission used at the source with a different one at the destination. To learn more, see Map permission levels.
The following table outlines the permission in Google Drive and the corresponding permission level in SharePoint.
|Item||Permission in Google Drive||Permission level in SharePoint|
|Document or Folder||Owner||Full control|
|Document or Folder||Viewer||Read|
|Document or Folder||Commenter||Read|
|Folder||Editor (Can organize, add, & edit)||Contribute|
Note: Only permissions with one of the standard access levels above are migrated.