I just came across the same problem the other day. I figured out how to fix it, and have done that now to this profile for you.
Initially, using the Changes Log on Soady-28, I verified that Wilton-1266 was merged into Soady-28, but the ghost profile of Wilton-1266 was still showing as a child of both parents, as well as the merged Soady-28 profile. I went into the mother and the father's profiles, selected the Add / Remove child at the bottom of the children list, scroll to the bottom of that page, selected the Wilton-1266 profile, 'double / triple checked' that was the correct one to be removed, and 'then' select Remove Child. I had to do it on both parent's profiles since it occurred on both. Sometimes it is only on one parent profile.