When you say you "filed for a partnership EIN" was this to be a multi-member LLC or a single member LLC?
If this is only a single member LLC, then you really do not need a separate EIN unless you had employees. If that is the case, then you can file the past returns on your Sch C using your SS#.
The only issue that may cause a problem is if you received any 1099's under the EIN of the LLC.
If you could provide some additional guidance on the questions above we can probably bring clarity and a conclusion to your issue / question.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
