+** Handling Of Configuration Changes
+
+There is a new mechanism to ensure that the search database and aliases are
+reconstructed if any options that affect them change. Unfortunately this means
+that the reconstruction step always takes place on upgrade from 4.3 or earlier,
+as those versions don't record sufficient information for the server to tell
+whether it needs to reconstruct or not.
+
+The result will be a log message of the form:
+
+new database parameter string dbparams-0-sha256:61609f3e6395ec8dee317ee216fe2848d70c249d347dd03c6a219441a13dd456 - removing old data
+
+...and a slower rescan on startup. Subsequent restarts should not have this
+problem (unless of course you change a relevant option).
+
+** Deprecation Notices
+