SYMPTOMS
New CF DSN records are created. Even the set of parameters is tried to be updated through Plesk, Domains, domain.tld, ColdFusion DSN, issued DSN page, the new set of parameters is added instead of updating existing ones.
RESOLUTION
Please download the following file:
https://download1.swsoft.com/Plesk/Autoupdate/Windows/8.2.0/122468/class.CFDSN.php
and place it to %plesk_dir%\admin\plib folder.