I just made a major discovery! (with regards to Premiere Pro)

[mikebw]

Filliam H. Muffman wrote:
Can you highlight the clips you want in the open dialog for Media Encoder? If it works like Acrobat, it should then give you a dialog box to pick the sequence.

The sequences only exist within Premiere, they are not rendered out as movie files yet so there is no way to import them as if they were files from an open dialog.