diff --git a/.changeset/search-with-alcohol.md b/.changeset/search-with-alcohol.md
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+---
+'@backstage/plugin-search-backend-module-elasticsearch': minor
+'@backstage/plugin-search-backend-module-pg': minor
+'@backstage/plugin-search-backend-node': minor
+---
+
+The search engine now better handles the case when it receives 0 documents at index-time. Prior to this change, the indexer would replace any existing index with an empty index, effectively deleting it. Now instead, a warning is logged, and any existing index is left alone (preserving the index from the last successful indexing attempt).