When adding words to a Word List, if I add it by first copying a word to the clipboard and then add from clipboard, the fields autopopulate. However, if I simply select the word and then in an opposing pane and then add the word from selection, the fields do not autopopulate. I would expect the behavior to be the same for both types of import.
A video showing the difference can be seen here: http://screencast.com/t/YKezWHC3f