Hi nete-snt,
Sorry for the bad news, have a look at this doc;
Caution
Cisco CallManager Release 3.3(5) only supports upgrades to Cisco CallManager Release 4.1(1) or later releases. It does not support upgrades to Cisco CallManager Release 4.0(1), Cisco CallManager Release 4.0(2), or other releases in the Cisco CallManager 4.0 release train.
For more information on Cisco CallManager upgrade paths and component compatibility, refer to the Cisco CallManager Compatibility Matrix at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/ccmcomp.htm
From this doc;
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_upgrade_guides09186a00803b1244.html
This explains the problems you are having.
Hope this helps!
Rob
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