This is how HEAD (2.2-CVS) behaves.
It does not affect copying from search results.
There is no such thing as a copy-restricted address book.
I can't reproduce the error messages, so ...

$cfgSources['localldap'] = array(

     'title' => _("E-Mail directory Uni Konstanz"),

...

     'export' => false,

     'browse' => false

);

Permissions set for 'localldap':

   Array ( [type] => matrix.  [default] => 6 )

   Array ( )



Now, when a user performs a search against localldap, and then tries 
to copy into his personal adressbook some contacts found therein,   
then the error message given  is: "Failed to find object to be added: 
No results" , which is perfectly obscure.



Likewise, when trying to export contacts from that search result, the 
user gets the message: "There were no addresses to export.".



When the user, however, tries to add a contact from that search result 
to a contact list in his personal addressbook, he will be told: 
"Successfully added 1 contact(s) to list." -- in spite of  that 
contact not being added to the contact list (cf. Ticket #4915).



Please make the following enhancements:



- In the display of the search results from an export-restricted 
addressbook, do not provide the "Export" menu item.



- Decide, whether " 'export' => false"  also excludes copying to 
another addressbook, or whether a particular option should be provided 
for restricting copying.



- In the display of the search results from a copy-restricted 
addressbook, do not provide the "Copy", and "Add"  menu items. (If 
"'export' => false" covers copying, then, of course, this suggestion 
applies to search results from an export-restricted addressbook.)



- If the above enhancements are not feasable, then, at the very least, 
provide a specific error message for these cases, such as: "No objects 
may be exported from this adressbook."