Reurgence map19 question

[Borg]

As you go down the starting hallway there is a hidden transporter to the left of where the hallway turns right. The switch that reveals the transporter is in the beginning of the exit hallway. It's an invisible walkover switch. You hit a switch to access the rest of the hallway where there is also another walkover switch that closes off access to the starting hallway where the transporter is. As far as I can tell there is no way to get out to gain access to the transporter. There is another transporter in a seemingly inaccessible area.

Is there a purpose for having inaccessible transporters in mapping? Or maybe I just have not found the way out of that exit hallway.