Tasks and Subtasks lose their original model order when applied to a project

Tasks and Subtasks lose their original model order when applied to a project

Hello, I hope you can help me in some way:

I created a task model with about 2400 between tasks and subtasks, I don't know if I'm exceeding any Project limit, because when I use this task model in some project most tasks lose the original order of tasks and subtasks of the model (see attached comparison)