Create a new project. Import the OMF with Copy Media activated. The OMF audio is in the new project’s audio folder.
Rename the original OMF folder, the one that your original OMF project was referencing. When N6 asks you to locate the audio files point it to the new project. Save the the project and close it. Delete the Audio folder and replace it with the new Audio Folder you created…
This worked for me