Help with nametrans - remove two folder levels from hierarchy

[freeform.reform <freeform.reform@xxxxxxxxx>]

Hi,
How do I properly strip off folders with nametrans in a folder hierarchy?

GMail puts Emails in Username/[GMail]/All Mails/

With offlineimap, I wanna get rid of those two folders in the
hierarchy: /[GMail]/All Mails/
so that cur-new-tmp are placed directly in the "Username" folder when
using offlineimap.

1. I managed to get rid of [GMail] with nametrans = lambda foldername:
re.sub('^\[GMail\]/', '', foldername), but how do I get rid off the
second folder in the hierarchy (All Mail)?
2. Also, I'm syncing TWO Gmail accounts. when i use the nametrans-rule
in .offlineimaprc for both accounts, it only strips off [GMail] on the
first account, not on the 2nd account. What am I doing wrong?

the relevant sections in my .offlineimaprc look like that:
####################################################
[Account one]
localrepository = Local1
remoterepository = Gmail1
autorefresh = 10
quick = 3

[Repository Local1]
type = Maildir
localfolders = ~/.kde/share/apps/kmail/mail/.inbox.directory/.one.directory
sep = /

[Repository Gmail1]
type = Gmail
remoteuser = one
remotepass = password
folderfilter = lambda foldername: foldername in ['[Gmail]/All Mail']
nametrans = lambda foldername: re.sub ('^\[Google Mail\]/', '', foldername)
realdelete = no

[Account two]
localrepository = Local2
remoterepository = Gmail2
autorefresh = 10
quick = 3

[Repository Local2]
type = Maildir
localfolders = ~/.kde/share/apps/kmail/mail/.inbox.directory/.two.directory
sep = /

[Repository Gmail2]
type = Gmail
remoteuser = two
remotepass = password
folderfilter = lambda foldername: foldername in ['[Google Mail]/All Mail']
nametrans = lambda foldername: re.sub ('^\[Google Mail\]/', '', foldername)
realdelete = no
####################################################


Thanks for your help,

Peter