Versions

Betweenlands version:

TheBetweenlands-3.5.7-universal (client side)
TheBetweenlands-3.5.7-server (server side)

Forge version:

Forge-1.12.2-14.23.5.2846

Singleplayer or Multiplayer:

Multiplayer - Forge only

Installed mods:

My server community use TeraCraft modpack : https://www.curseforge.com/minecraft/modpacks/teracraft

Description of the problem

How to reproduce:

1. Create a portal tree in overworld and take it.
2. Go back to overworld with the automatically created portal tree.
3. A new portal tree, different from the one created in step 1, is automatically created in overworld. It always seems to appear in a perimeter close to the initial portal of step 1.
4. Take this new portal tree to go in Betweenlands again. You arrive at the same place as after step 1.
5. Now resume from step 2.

Beyond the problem of link between the portals, thus causing a fairly random exit from the Betweenlands ... This gives rise to the creation of an infinity of Portal Trees with each passage from one dimension to another.

PS : I also have players on the server whose coordinates can be quite close in the overworld, and whose taking their Portal Tree sends them to the "Betweenlands" Portal Tree of another neighboring player (after which, the way back brings them back to the same neighbor on the overworld side and not to them).

PS : sorry for my bad english, I'm french.

Expected result:

I would like a portal to be able to be linked to only one other portal and that this cannot change.
So I would like that on their return from Betweenlands, the players are sent to the Portal Tree that they had initially each individually created.
Likewise, I would like to avoid an infinite number of Portal Trees being created unintentionally because of this problem.

Actual result:

When crossing a Portal Tree, players do not always arrive where they should. In addition, it creates a multitude of Portal Trees that should not be.

Thanks for your help.

What kind of server software are you using? "Vanilla" Forge? SpongeForge? etc.
This had been reported once before but I have yet to encounter this myself, and I've made plenty of worlds while testing. I suspect that there's either something stopping the mod from writing to files or some mod/server software changes how chunk data is saved/loaded.