how can i export the project to primavera program
I don't know the particulars, but I'd first go to P3 and look at the
file formats under File, Import. Then I'd go to Project, and look at
the file formats under File, Export. If there's a match, it'll
probably work, except for the standard formats like CSV or TXT which
won't transfer your links or resources, just the text. But they should
both have MPX or something like it.
Hope this helps in your world.