It's not possible with the current version. Otherwise, "not possible" is not the best choice of words, since anything is possible. But I'm not the one who decides these things anyway. I had noted...
Yes, indeed, but it is pretty difficult to make an export function that is able to export all episode information without making the whole setup very complex, so I thought it would be enough to export fields you mentioned above.
...which, being the words of one who sees the future, suggests to me a very low likelihood of this being possible in the next version.
I think you have to accept the fact the episode management feature was designed for episodes, not for groupings of movies. It doesn't have to be used for series, but the main idea behind it—that episodes have a "child" relationship with their "parent, where common information is recorded—has to be respected. If you want exactly the same information from episodes as movies because the parent-child relationship doesn't exist or is not very relevant, then those episodes would have been better treated as movies in the first place. They could have been associated using a custom "collection" field used for the purpose of displaying them together as groups.
I see the function in question does allow you to export enough information about your "episodes" that they could be re-imported as movies. You could also include the current "series" titles of such collections, and import those to a new "collection" field for each movie.
