Why are tracks of the same title failed to uploaded to iCloud/iTunes Match? As the screenshot above shows, some tracks of the same title are failed to be uploaded to iCloud/iTunes Match.  Even they have different time lengths and belong to different discs.

For example, in the above screenshot, SHOW (3:32), the first track of the second disc has an iCloud status icon Duplicate, whereas SHOW  (3:30), the first track of the first disc is successfully uploaded to iCloud/iTunes Match.

Why does this situation happen, and how can I successfully upload these tracks to iCloud/iTunes Match?
iTunes match analyzes every song before uploading or matching it.

Even if a song appears to be different (different length, different title) it may in fact be the same song with a bit more silence at the end.

You can only upload songs that are different from the songs that you have uploaded before.

Is this second disc some kind of special edition of the first one?