What is the difference between Identify and Re-Identify?

[andybob (Andrew Cox)]

From the original thread:

How to Merge multiple artists into 1?

Pure coincidence, but I just discovered in my library multiple instances of artist duplication – exactly as DrTone described above. Each respective duplicate indicates a different number of albums but directs to the same artist page with an incomplete roster of albums. None of the duplicates can be merged. A full or at least partial solution I found through trial and error was to select one or all albums under an affected artist, then instruct Roon to re-identify those albums. In most case…