Kaddressbook lost contacts 11.10 upgrade

I just upgraded from Kubuntu 11.04 to 11.10, using the KPackageKit 
desktop notification and
"start upgrade now". Subsequently when I opened Kaddressbook its 
contacts list was empty. 

As a test, in 11.10 I imported an old vcf card file into Kaddressbook, 
and on that basis I believe the
Kaddressbook contacts are now stored as individual vcf cards in 
~/.local/share/contacts. Is that correct? 

I have a recent full backup (including all dot directories), done prior 
to upgrading from 11.04
to 11.10,  and the directory "myusername"/.local/share/contacts does not 
exist in the backup. The file
"myusername"/.kde/share/apps/kabc/std.vcf exists, but is empty, and I 
cannot find my contacts or
vcards anywhere else in the backup. This is significant to me since I 
added many contacts subsequent
to the old vcf card file I imported into Kaddressbook 11.10. 

Can someone tell me where my addressbook and/or vcf cards would have been in 
11.04, and thus in my
backup prior to upgrading .... or if they would have been saved anywhere 
during the 11.10 upgrade
process ... or if there is any way to recover my addressbook and/or vcf 
cards from my recent 11.04
backup???? 

(Not sure this is related, but, while I normally use thunderbird not 
kmail, when I do try to start kmail
as a test, I get a fatal message "failed to fetch the resource collection") 

Thankyou, Gus  

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