Unable to undelete emails from roundcubemail

[Homer Dokes]

Greetings,

I have a user who has inadvertently deleted all the emails in a series 
of folders.  The emails are still in their physical mailbox directories 
on the server and they can be seen grayed out within the roundcubemail 
environment and each one can be selected and the contents reviewed.

The issue is that they want to un-delete these emails and I have read 
that there is suppose to be a way to do this within roundcubemail by 
right clicking on the folder and selecting 'un-delete' however this 
option does not exist in either of two different Kolab 3.4 
installations.  (I will add that I have done recent (withing last 2 
weeks) updates of both services for the Kolab environment.

In addition, when attempting to use the expunge command at the CLI it 
does not see any of these emails as being marked for deletion or 
available for recovery tho they are clearly residing in their respective 
mailbox on the hard drive, can be see (tho grayed out) within 
roundcubemail, and can have their contents reviewed.  If I toggle the 
'do not show deleted emails' in roundcubemail then these emails 
disappear from the roundcubemail display.

The same information I have read suggests that the 'un-delete' option 
from the pop up menu's has to be 'enabled' however there is no reference 
there or in any search on the internet for enabling this option.

So.... to recount....

emails have been marked for deletion
emails can still be seen in kolab and look to be marked for deletion as 
they are grayed out (further substantiated by enabling 'do not show 
deleted emails' and having the emails in question disappear)
emails are still in their respective mailbox on the hard drive
emails do not show as marked for deletion when using [su - -s /bin/bash 
cyrus -c "/usr/lib/cyrus-imapd/unexpunge -l 
user/john.doe/Repairs at example.org"]
roundcubemail option to 'un-delete' in right click pop up menu does not 
exist
we can find no where either in config files or through user settings on 
roundcubemail to enable the un-delete option.

I also searched the users mailing list and could find nothing on this.

In a word........   help?

As always.... thanks to anyone who can shed light on this.