The problem is that a title can appear on so and so many albums. You may find it on the original album, the EP, the greatest hits, the best of, the live album, the maxi version, the editted version, the compilation version, the video version. And so on.
If you want to use it to search for covers, then treat (in a first approximation) every track as an EP version and copy TITLE to ALBUM.
Use an action of the type "Format value" for ALBUM for that:
Format string: %title%
(more on actions, see the FAQs /t/967/1