Upgrading from v11, should the Indexes be rebuilt?

Question

I know v12 uses a newer version of SOLR, however, documentation doesn't mention anything about rebuilding indexes or copying them from solr 7.6 to to Solr 8.7 version of search.

Kevin Cunningham · Accepted Answer

We've update the docs to be more explicit. Yes, a full re-index is necessary as there are field addition and changes. In the case from 11->12 you can copy the index but of course would still need an re-index of the existing. Content mentioning will not work until a re-index is done. From a major to major perspective we generally recommend rebuilding it if time allows, but in this case the v11 index will load fine but hinder functionality until the re-index is complete.

Upgrading from v11, should the Indexes be rebuilt?

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