"Necropolis" - changes to creatures of levels 6-7.

As an alternative, I'm still puzzled about where I made a mistake. After all, we didn't change the actual link in the executable file, only one screenshot. Therefore, if we hadn't guessed the correct path, everything would have remained as before. But here, it's different; the screenshot has changed, which means the path is correct, and the problem lies in the screenshot itself. However, I can't figure out what the problem is. Two identical screenshots, except that one shows a black knight (which works perfectly), and the other shows the Undead. The names seem to be correct. So, what could be the issue? There are no differences in the xdb files, except for the link to the "dest name," which is correct.