Mass Edit Resets ***ALL*** Date fields to 00-00-0000 if a DATE (Custom field) is edited.

1. Go to listview
2. select records (tested with services)
3. Hit Edit icon
4. Update one of the date fields
5. Hit Save

Result: All other date fields get set 00-00-0000.

*Tested on https://demo.vtiger.com/vtigercrm/

Video Recording