chwala issue on debian wheezy

[Szota, Marcin]

Hi

i've just updated kolab 3.3 to 3.4.
All works fine except all my files in chwala have now size 0KB.
According to this mail
https://lists.kolab.org/pipermail/users/2013-November/015993.html
(..old email, yet it works since 3.4)
chwala needs php-mail-mime at least 1.8.5 and debian wheezy comes with 
1.8.4, so i've upgraded to 1.8.9 and all works fine if i upload new file 
– old files still are shown as 0KB size.
Any idea how to access old files without manually decoding every single 
message?
all still there in /var/spool/.../Files untouched

thanks in advance

-- 
Marcin