Yes, it is possible to transfer Secure Folder data across different devices, using the "Back up and restore" feature.

This is done in 2 steps:

1. On the old device: While inside the Secure Folder, use the Back up and restore feature to upload your data to the Samsung Cloud.
   1. Open Secure Folder.
   2. Go to Settings.
   3. Select Back up and Restore.
   4. Select Backup.
2. On the new device: While inside the Secure Folder, use the Back up and restore feature to download the data inside your new Secure Folder.
   1. Open Secure Folder.
   2. Go to Settings.
   3. Select Back up and Restore.
   4. Select Restore.
   5. Select your device from the backup list.

NOTE – By default, Secure Folder data is not linked to your Samsung Account.  Secure Folder provides users with a new separate, secure space. So when you setup Secure Folder on a new device, there’s no data inside Secure Folder. 

See the Secure Folder User guide for more information on using Secure Folder.