Importing large projects

Hi,

Is there any simple way to import large projects (>2GB) in ALM 12.5x?

I know how to do it with copying db dump, modifying dbid.xml and copying file repository.

But the administrator guide states:

"Projects greater than 2 GB cannot be imported. They must be imported in sections."

Does anyone know how importing in sections works?

Thanks and best regards,

Beate