My original post on this subject was moved because it didn't apply to Webmail. But it does apply to Webmail so I'll ask my question again in a different way.
I have a comprehensive junk mail filter set compiled using the Horde Webmail Flter Tools. These shift junk mail into a folder, created using the Horde Webmail Folder tool, where I can skim junk mail occasionally and mass delete it.
These filters have worked very well until a couple of days ago. Now the InBox reports the filter action, but the filtered messages are not being moved. They remain in the InBox and my Filtered Junk folder remains empty.
I believe there had been problems affecting CPanel and/or Webmail at around that time. Has anything been done in maintenance which would prevent the automatic movement of messages between folders?