I have edited my beez_20 joomla 2.5 template..
Editing file "index.php" in template "beez_20"
where the left menu is constructed by three jdoc statements.. (I added the ['s for this post)
[jdoc:include type="modules" name="position-5" style="beezTabs" headerLevel="2" id="3"]
[jdoc:include type="modules" name="position-4" style="beezHide" headerLevel="3" state="0 "]
[jdoc:include type="modules" name="position-7" style="beezDivision" headerLevel="3"]
and I've reordered these three positions, intending to make modules in position-5 appear above modules in position-4. By default, position 4 is on the top.
After making this change, the modules did not swap positions as I had expected.
I've cleared my browser cache and used a different browser, in case any xml/html was being cached. I just think I'm doing something wrong.