Upgrading a 3.1.1 version to 3.2.2 logged this error in the script for 3.2.1

System.Data.SqlClient.SqlException: CREATE UNIQUE INDEX terminated because a duplicate key was found for index ID 4. Most significant primary key is '3785'.
Could not create constraint. See previous errors.
The statement has been terminated.
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters)
at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters)
at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteNonQuery(String connectionString, CommandType commandType, String commandText)
at DotNetNuke.Data.SqlDataProvider.ExecuteScript(String Script, Boolean UseTransactions)


ALTER TABLE dbo.SearchItemWord ADD CONSTRAINT
IX_SearchItemWord UNIQUE NONCLUSTERED (SearchItemID, SearchWordsID) ON [PRIMARY]

Will anything be crippled as a result in search?