Looks Like it got fixed somehow.
What I think I did was went into images and added the cover.
Or to make it so I could see what I was doing...
I right clicked on All Files - Customize View - "Under Included Files" Set Rules For The Display - Media Type Is
Before It just had - Audio, TV, Video
So I added "Image" to the list.
After naming the Image the same as the Series it looks likt it works now.
Now when I sort by "Series" I can see an extra line for the Image and can change that for the front cover.