PPE/ investment property

Hi

I am seeing in a number of exercises and i cannot distinguish the difference correctly.

In particular they have business combinations where the fair value adjustment is on non depreciable land.
There are other investment properties in the parent own SOFP.
I took non depreciable land and put it in investment property because it has no buildings and i assume they are deciding what to do with it (considering it came with the subsidiary).

i see they always transfer it to PPE

Is there a rule in this case (other than the obvious ones in the standard which i read before writing)?

regards