Link for old addon missing from admin configuration menu after upgrade

Hi,

I upgraded my site from 1.38a to 1.50 and i restored my old database.now i cant see my xcheckout link under admin->configuration menu.But I can see this xcheckout record when look at configuration_group field under my DB.Also I can see xcheckout page when i enter manually this address (configuration.php?gID=31).

What am I doing wrong ?

Maybe nothing. The way admin mods are registered was changed in version 1.5.0, so that mod may have to be updated to work properly.

I found on my new DB admin_pages table.But in ZC138a doesnt exist this table. I think this table contains all admin pages records.And i cant see my missing link record in this table.There are many parameters in this table. How can I add my missing link into this table? is there any idea ?