After upgrading to the latest version of VIrtuemart (from 4.2 to 4.4.6 11109), I noticed that the quantity rules for prices no longer work. Regardless of the rule, only the price that is first in the list is displayed. I also tested this directly in the shopping cart in the add-on from Jumbo (VP One page) - here the rules also stopped working.
PS. Annoyingly, sorting the order of prices is also impossible - but it's something that never worked, so I got used to it in time