anchor.diff:  
   == Upgrading from Pre-7.x Versions
   
  -Users upgrading from versions of Solr prior to 7.x are strongly encouraged to consult {solr-javadocs}/changes//Changes.html[`CHANGES.txt`] for the details of _all_ changes since the version they are upgrading from.
  +Users upgrading from versions of Solr prior to 7.x are strongly encouraged to consult {solr-javadocs}/changes/Changes.html[`CHANGES.txt`] for the details of _all_ changes since the version they are upgrading from.
   
   The upgrade from Solr 6.x to Solr 7.0 introduced several *major* changes that you should be aware of before upgrading. Please do a thorough review of the section <<major-changes-in-solr-7.adoc#major-changes-in-solr-7,Major Changes in Solr 7>> before starting your upgrade.
   
  
positive.code: implementations. It is not a comprehensive list of all changes to Solr in any release.
  
  When planning your Solr upgrade, consider the customizations you have made to
  your system and review the {solr-javadocs}/changes//Changes.html[`CHANGES.txt`]
  file found in your Solr package. That file includes all the changes and updates
  that may effect your existing implementation.
  
  
negative.code: 
  If you are upgrading from 7.x, see the section <<Upgrading from 7.x Releases>> below.
  
  === Solr 8.8
  
  *Removed Contribs*
  
  * The search results clustering contrib has been removed from 8.x Solr line due to lack
    of Java 1.8 compatibility in the dependency providing on-line clustering of search results.
    See SOLR-14981 for more details.
  
  === Solr 8.7
  
  See the https://cwiki.apache.org/confluence/display/SOLR/ReleaseNote87[8.7 Release Notes^]
  for an overview of the main new features of Solr 8.7.
  
  When upgrading to 8.7.x users should be aware of the following major changes from 8.6.
  
  *Autoscaling*
  
  