I see what you are referring to. Could you please try removing one of those duplicates from your General profile by hovering over it and clicking the trash bin icon? We'll check on it once you do and investigate this further. In general, a portfolio item that's been added to a Specialized profile (Graphic Design in your case,) will also show in your General profile automatically.
I just re-added one of the projects with a new name and it is still dulicating itself. Followed same process as other projects. I am going to delete one of the duplicates so you can see what happens.
You can come back here and let us know if the issue persists when you try to add the other portfolio items so that we can investigate it further for you. We'll wait for your update!