I don't understand why you must do that.
In screenshot 3 - Custom items; I see you have defined everything in your skin. But why?
When I added that portion to my skin that rick.ca provided me with for adding IMDB votes, and then I selected all movies on the left then did an update using the icon on the toolbar (with of course the changes made to the Custom items and plugin preferences) everything still works fine. I can still use prefereces\Movies\Visible items to apply changes to what I want displayed in the skin. However, I found out if I remove IMDB votes from the Custom items list, and then want it back, then all the data for votes will be lost and I will have to update all the movies again to get the data for votes back again.
For the IMDB [EN] plugin at the bottom; Overwrite fields when importing data...
What is the difference between an X, check mark and when there's nothing it goes grey, over each of the items?
Thanks To All. (I'm using XP 32bit and 64bit on another, I have 3 levels of items in the Overwrite fields section and all boxes are grey no matter what, and the checkmarks and X's are either blue or black, hard to tell on a grey background).