Files shared with a link
Google Drive files that are shared with a link will be copied but the share link will be lost. You will need to share the file in SharePoint once the file is migrated.
For more information, see Google Drive file guest or shareable link not supported.
Migrated files do not look exactly as they do in Google Drive
It is possible that some files will not look exactly as they do in Google Drive.
When we download files from Google Drive to your SharePoint site, we use the export function. The export function converts a file from Google Drive format to Microsoft Office format. The export function is not perfect and can make the migrated file look slightly different.
This will only happen to files that are in Google format since we have to use Google to transform them.
Migrating shared files and folders
When you migrate to something other than OneDrive for Business, the files that are shared at the source will have a different behavior at the destination.
Instead of sharing the file, we will apply a set of permissions that allows access to people with which the content was shared. They will not find the files in their folders or in a Shared with me view, but they will have access to the files if they go to the location where they were migrated.
If you want the files to be easily found by users in their Shared with me view, the best way to achieve it is to migrate to OneDrive for Business.
Note: At this time, we do not support the import API for the modern OneDrive experience. Shared with me files are not preserved when using the modern experience. Use the classic OneDrive experience to preserve Shared with me files.
To prevent duplicating files, you should always migrate using the My Documents view (which is the default view) when migrating multiple users' files. This will only copy the files if the user is the owner of the file. For example, if you copy the files for users A and B to OneDrive for Business and user A has shared a file with user B. Since user A is the owner of the file, it will be copied into his OneDrive for Business and it will be shared with user B so that it appears under his Shared with me view in OneDrive for Business. However, if you use the Shared with me or All Documents view to perform the migration in ShareGate Desktop, then the file will also be copied into user B's OneDrive for Business, which creates a duplicate. This is a problem since the changes made to one file will not be reflected in the other one. These views allow you to copy files even if the user is not the owner, which can be useful in some scenarios, but you have to be mindful of creating duplicates.