RTF is a global modification that replaces all towns in the game.

Nothing will happen!

To achieve happiness, you need to use the utility (it is paid, but the license is lifetime and the extensive format support is worth it) from the respected comrade Zoltan Karpathy - 3D Object Converter

That is, the model's mesh can be saved in .3ds and then worked with, then the resulting file needs to be saved in .mb (Alias Maya 6.0 - also paid, by the way, you can get a license through a downgrade), after that, using the illustrated step-by-step tutorial from my page based on the method of the respected comrade CrazyPill, you can get the model's mesh in format 5, and at the same time, it will be formed in the Granny2 .gr2 format