Hiba:
In addition to Link's advice, take a look at the
Merge command, works best if the stories of each file match, in the Help files see: Interoperability > File Handling and Exchange > Merging Files to ArchiCAD. This will bring in all the 3D elements and 2D plan elements, but not 2D elements in other windows (Section, Elevation, etc).
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David