Hello All, I am trying to upgrade from Solr 7.5 to Solr 8.9 and hoping not to re-index (large index size).
I performed a rolling upgrade and was able to bring up solr, query and add new documents to the index without any issues. However, when I try to update an existing index that was created under 7.5, the update presents no errors and creates a duplicate record, and the get query after retrieves an old image of the document. Additionally, updating new documents created under 8.9 work as expected. The issue only seems to affect the existing documents created under 7.5. Any help would be appreciated. Thanks in advance, Praveena.
