The intent is to preserve local settings during upgrades.
Discussions in TWikiIRC concluded in recommendation of defining $cfg{LocalSitePreferences} variable that is set to
TWikiPreferences by default.
Added
$cfg{LocalSitePreferences} = 'Main.TWikiPreferences';
(for compatibility) and changed the prefs reading so it reads
LocalSitePreferences if it is there.
The documentation still directs the user towards
TWikiPreferences rather strongly; it would be good if something could be done about this as well.
SVN 4683
CC