Looks like you have the same path set for both Classic and Classic Wrath.
Paths should be:
- Retail = Your_PathWorld of Warcraft_retail_
- Wrath or TBC = Your_PathWorld of Warcraft_classic_
- Classic = Your_PathWorld of Warcraft_classic_era_
So the default paths would be like the following:
For 64 Bit
- Retail = C:Program Files (x86)World of Warcraft_retail_
- Wrath or TBC = C:Program Files (x86)World of Warcraft_classic_
- Classic = C:Program Files (x86)World of Warcraft_classic_era_
For 32 bit
- Retail = C:Program FilesWorld of Warcraft_retail_
- Wrath or TBC = C:Program FilesWorld of Warcraft_classic_
- Classic = C:Program FilesWorld of Warcraft_classic_era_
You can literally have all three installed and they should update flawlessly with no issues. I have had no issues like this for several years.
See chrome_os8CeE0iXv.png that image will outline the current patches, aligning them up to your original post, it outlines 3.021 as Wrath and 1.60 as Classic.
I hope this helps rectifying this issue that you have described here.