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## List of changes

  • `EPiServer.Find.Api.Facets.NestedFacetExtensions` was removed. Use `EPiServer.Find.NestedFacetExtensions` (available since Optimizely Search & Navigation 12).

  • `EPiServer.Find.Api.Querying.Filters.NestedFilterExtensions` was removed. Use `EPiServer.Find.NestedFilterExtensions` (available since Optimizely Search & Navigation 12).

  • Index operations were removed from the `EPiServer.Find.Api`-namespace (CreateIndex_/DeleteIndex_/IndicesExists\*). The Find backend blocks any use of index operations (and always has been).

  • `ISearchContext.Language` was renamed `ContentLanguage`.

  • `ISearchContext.Analyzer` was added.

## Reindex the site

The language routing changes make it necessary to reindex the site after upgrading to Optimizely Search & Navigation 13.