As a Roblox developer, it is currently impossible to teleport a player back into a Private/VIP server after teleporting them to a Reserve Server.
Since my game teleports players within a universe, I wanted to keep them in a “private universe”. I was able to program this logic myself by teleporting players with reserve servers, however, a flaw that I have run into is that there is no way to teleport a player back into the original VIP/Private server (start place). None of the teleport APIs allow me to teleport the player back. To fix this, I teleport them to a reserve server for the start place, but this causes there to be 2 possible separate start places so you can’t go back to see friends who are in the main private start place.
It would be nice if TeleportToPrivateServer could support this.