A city with different models.

Hmm, I can only assume that the issue lies with the Gates parameter, which is also configured in TownExterior and controls the position of the "entrance" to the town. It is likely strongly linked to the main town model and doesn't work for the new one. But I can't say for sure, I suggest asking people who created new models for towns, for example, zahar0z or fktifzobr@mail.ru.