Hard to tell, to be honest.
It seems that Map Construction doesn't mess up the rotations when simply loading the main map and duplicating objects.
It does mess it up when loading this map, which was made with MTA.
Now, I can't tell if the issue has something to do with MTA maps or not.
Yet, to save yourself from converting objects and parameters, I recommend using a map editor script (like Texture Studio or Fusez's Map Editor).
I mean really, when I made Blake Island, I only used MTA for spamming trees and taking care of other details.
The magic behind it relies on Adri1's map mover, which I personally classify it to be the most revolutionary mapping tool made in the past few years.
Fusez hadn't come up with his editor back then, but I could easily replace MTA with it, since it has similar controls and allows the use of absolutely all samp's objects.
Can you tell me which casino are you talking about?
I tried to copy the big ear hill and it looks like I didn't get the wrong angles like I did when I was creating my island.
So there's a chance I might be able to copy your interior. Can't hold any promises, though.
The MTA Map Editor and Adri1's map mover convert the rotations without problems.
I used both of these tools when I worked on the Blake Island.
The issue takes places when you import the map into Map Construction.
That's why I only used it to copy the original land masses.
It's easy because each land mass object is unique and its original rotation is zero.
So whenever the rotation got messed up, I just corrected the rotation to zero and proceeded to import the objects into the map mover.
No, so far there is no fix. The problem is not from Adri1's Map Mover. It's from JernejL's tool.
I figured that out shortly after writing that post and reported the problem to JernejL. He replied with the following words in a private message:
"Due to the way angles are stored by game and sa-mp it's not possible to 100% convert the rotations in both ways (quaternions & euler angles), sadly this will remain a limitation of the editor unless sa-mp starts to support quaternion rotations on objects."
You'll have to make due with either MTA or Texture Studio.
Qué tal Ride, ¿podrías tomarte la molestia de crear un tutorial sobre el uso de y_iterate?, éste es un complemento muy útil en la librería YSI y por lo visto no hay nada referente a ello en español, saludos.