Retention policy doesnt work

Hi

I have Exchange 2013 environment containing DAG with 2 MBX servers, 2 NLB fronend servers and Outlook 2010 clients.

I made MRM policy to delete mails 14 days and older from "Deleted items" ajd "Junk email"  folders.

Using ECP I made 2 retntion tags: "Deleted items" and "Junk email"  Retension period for both folders 14 days and retention action is "Delete".

I created MRM policy containing these tags and applied that to some mailboxes.

But nothing happened.

PowerShell commands give results:

[PS] C:\Windows\system32>Get-MailboxServer | Format-Table Name,ManagedFolderWorkCycle* -Auto

Name ManagedFolderWorkCycle ManagedFolderWorkCycleCheckpoint
---- ---------------------- --------------------------------
MBX1 1.00:00:00             1.00:00:00
MBX2 1.00:00:00             1.00:00:00

I managed with this policy already some days ago.

I also started ManagedFolderAssistant manually using

Start-ManagedFolderAssistant -Identity <mailbox I applied MRM policy>

What else can I do?