When you restore from image file, you will write over whatever you have on your drive. If the image is made from D XP, you will get D XP back. If it is made after you install authentic XP, you will get authetic XP.
I will not recommend to install authentic XP over the D XP. I would do a clean install.
I will not recommend to install authentic XP over the D XP. I would do a clean install.