Graupner La Co[n]stanza -Problem

[sonoptikon]

The work La Constanza or La Costanza by Graupner is double, but both are not visible in the composer's page.

I created a work "La Costanza ..." (with missing n) because I could not find the work. And I uploaded an arrangement.

Later I found the work, abut this, too, is not to be found in the composer's page. I posted the same arrangement to this page.

Now the work with only one arrangement (and the arrangement) must be deleted, because it is double.

Why can it be that works are not shown in the composer's page?

[Notenschreiber]

You find "La costanza..." under the tab "collaborations" of Graupner´s composer page.