Only if you started with a netlist project that was targeting Expedition. If you started with an integrated Expedition project then you cannot do this directly. If you started with an integrated Expedition project from File - New project - Expedtion, or Expedition from the Tasks section of the start page then you will need to create a new Netlist project and then cut and paste the schematics from the Expedition project into this new one. You will then have to check and possibly correct properties so they match the expected properties for a netlist project.
If you started with a netlist project then change the target PCB system in Setup - Settings - Project - Layout Tool.
I had the same problem. Copy paste pages does not change the properties so they work correctly with the Pads netlist interface.
I tied the Setup - Settings - Project - Layout Tool but that option is not available in an expedition netlist.