LexisNexis has alerted us of the following:
"a technical problem with the online version of Nimmer on Copyright resulted in the omission of Chapter 8, "The Nature of the Rights Protected by Copyright," from the online treatise between March 20 and March 27."
So if you ran a search in this treatise during that time period it would be a good idea to re-run the search to make sure you did not miss any important material from Chapter 8.