Saying 'Network folders support' we mean the possibility to use the UNC (Universal Naming Convention) pathnames (like \\server\share\folder\) as Folders of the included and excluded masks. The Backup Tool Pro backup can store the UNC files, but the Backup Tool cannot.
If you assign a drive letter to the network folder, the Backup Tool considers files on the mapped drive as local files.
Note: The limitation of using the UNC names is applied to included and excluded masks only. You can create and store the backups on the UNC folders by using both the Backup Tool and the Backup Tool Pro.