Missing album and tracks after migration to Nucleus One (ref#PWLC6T)

[Michael_Weadley]

Hi! What’s not quite right with Roon?

· None of the above quite fits

None of the above quite fits

· None of these quite match

Tell us what's going on

· Missing one album and three tracks after migration to Nucleus One (Internal Storage)

I migrated an existing Roon NAS over to Nucleus One and Internal Storage. Favorites and history are all there this time. Almost every album came over, but I am missing one album with three tracks from an artist that is not missing.

I have both Roon Servers available for investigation. What are good ways to discover the missing album?

This is a low priority support ticket. I have diff tools and can write scripts if needed and relevant. Thanks! Mike

Tell us about your home network

· Xfinity Cable Router ~1.2GB
Asus Zen XT 12 Wifi Mesh
Unmanaged TP-Link 2.5 GB switch
Synology DS 218 NAS with music files and Roon on NAS
Nucleus One with Internal SSD storage of music files copied from the NAS

[Michael_Weadley]

I believe I have validated that the music folders and files are identical.

[vadim]

Hello @Michael_Weadley,

Thank you for the clear explanation — and it’s great that you still have both Roon Servers available, that makes this much easier to validate.

Since this affects only one album and three tracks, while the rest of the library and history migrated correctly, this is almost certainly a library index mismatch rather than missing files.

Before going into any deeper file-level comparisons, please try the following in order:

Step 1 — Force a full rescan

On the Nucleus One:

Go to
Settings → Storage

Find the internal storage location and click:
Force rescan

This tells Roon to fully re-walk the storage and reconcile the database against what is physically on disk.

After it completes, check whether the missing album and tracks appear.

Step 2 — Force Roon to rebuild just those files

If the album is still missing:

1. Using a file browser, move the affected album folder out of the Nucleus music folder (for example, to a temporary folder outside Roon’s watched storage path).
2. In Roon, go to
   3.Settings → Library → Clean up Library*
   and run Clean Up to remove references to missing files.
3. Move the album folder back into the Nucleus music storage.
4. Go back to
   6.Settings → Storage → Force rescan*

This forces Roon to treat those files as completely new and re-ingest them cleanly.

[Michael_Weadley]

Hi Vadim,

I tried the force rescan in the Roon Client attached to Nucleus One, but the counts did not change.

I don’t know which album or tracks are missing from this new Roon instance. Is there a way to identify that easily? If not, should I move all music folders to force Roon to rebuild the library?

Thanks, Mike

[benjamin]

Hey @Michael_Weadley,

Thanks for giving that a try! Two additional areas to check:

1. First, head into Roon Settings > General > Show hidden albums and tracks. Does that change your numbers to reflect properly?
2. In your Roon Settings > Library > Skipped files - do you see anything there?

Thank you!

[Michael_Weadley]

On my old system I moved the underlying music files and told storage to reindex. At the end it only had one weird entry left that didn’t link to a file. So I think this was the “missing” file in my new Nucleus One.