We'll respond shortly.
Seems like the dialog that shows recent files is very broken. If you are experiencing the same problem: go here to +1 the issue http://youtrack.jetbrains.com/issue/RUBY-11460 .
Confirmed by Heroku:
The fix (also from Heroku):
heroku pg:reseton the target db before importing to force clean the db.
Considering database provisioning is nearly instantaneous for most users, restoring into a fresh database is best practice, and we will work towards making that the default option in the future.
IDE in the cloud where you get your local workspace over SSH/FTP. Explicitly mentions pair programming throughout the site.