We have removed the use of the 'Lucene NonRelevance Search Field' to specify the ordering of product search results when Lucene is in use. We now use the 'Enable Non-Relevance based sort' flag to override sorting by the default Lucene Score.
Now when the 'Enable Lucene Non-Relevance Search' flag is in use, you can override the ordering of search results using the Role/System level 'Product List Sort' fields. This are the same fields that were used pre-Lucene, and are still used when Lucene search is disabled.
- Implementation guide - CopyProduct Sorting with Lucene Score Overrides
- General Lucene documentation - CopyProduct Search With The Lucene Search Engine
