Whenever you wish to migrate from an older framework of Brilliant to a new one, or simply want to make a backup of your members, you always need to backup your member's photos, be then profile photos, logos, thumbnails and more.
For this we would do the following steps:
1. Go to Settings -> File Manager
2. Select the following folders as seen on the image below:
3. After selecting the folders in blue in the image above, click on the Compress button (Green circle). This will create a single file on your home folder of your site. You can now download this file that will include all images used by your members.
This image folders, together with your exported SQL file for your database will contain everything related to your members.