Hotfix 7704 released today.This release fixes the problem  "Contacts getting deleted, when a sub account is deleted".People who use Sub Account feature, please upgrade to this build.

Please follow the link below for the list of issues addressed, 

http://www.manageengine.com/products/support-center/sp-readme-7_6.html

For upgrade instructions and to download the patch, please use the link below,

http://www.manageengine.com/products/support-center/service-packs.html

Thank You

Regards,

Arun

SupportCenter Plus