Following DNS records are not migrated from Plesk 9.5.4 to 11.5.30:
mail.example.com CNAME example.com, ns.example.com CNAME example.com
This issue has been considered as software issue #PPPM-2216 and will be fixed in future product updates. Please use provided ID to track maintanance in PPP release notes. Also subscribe to our knowledge base - each product update comes with corresponding KB article: http://kb.plesk.com/rss/index.html
You can create some script using command line to add/delete dns records. For example to add CNAME:
# /usr/local/psa/bin/dns --add example.com -cname 'www' -canonical example.com SUCCESS: Creation of DNS record in Domain 'example.com' complete.