You mean the stocks? Bleh, just upload all your pieces. It's nice looking back at all your work. I'd love to view your gallery sometime.

Just let the dA do their job and let them take the "copyrighted" ones off. Anyways, try to check if they have a CC license and see what permissions they give next time. If there's no CC and no download link, I doubt they want their work used or at least posted on dA lols.