+This will do a consistency check of the data, and is all most existing
+installations will require.
+
+If you are upgrading from a quite old provision (Samba 4.0 alpha 13 or
+earlier) then running upgradeprovision will do an upgrade of security
+descriptors, and upgradeprovision --full will perform a more
+comprehensive upgrade of the data (including schema and display
+specifiers). This attempts to do a new provision, and to then copy
+existing data into that database.
+
+If you are upgrading from a more recent version, particularly alpha16
+or later, then it is better *NOT* to run upgradeprovision as the
+database format has not changed.
+
+To upgrade from BIND9 flat files to the internal database store for
+Bind 9 DLZ, use ./source4/scripting/bin/samba_upgradedns