Do you have original XML file that you gave the colorist? The original should match the color corrected version. You will have to relink the clips.
I guess there's also the potential that the grader could have written out the short as one continuous sequence, start to finish, which would make things easy. Resolve gives that option as well as shot by shot. If it's shot by shot it should match the source XML/EDL as Kevin suggested.
I do have the original xml file. I haven't tried to relink the xml session, which I will definitely try. But I did try to relink with the original Premiere session as the clip names are the same, but I couldn't as the files are in .dpx format(as I had mentioned) as the file names are actually folders with images inside them. But I will definitely try to open the xml and relink the clips.