Allows fields and field groups nested within a field group to be treated as a single unit or block. When you enable a field group to survive as a block, the survivorship configuration applies to all the fields and field groups within the block.
By default, a field group is treated as a block. All fields and field groups that are nested within a field group have the same survivorship configuration and survive as a block. Field group entries from a patch record survive as a block. You can disable a field group from surviving as a block and set specific configurations for fields and field groups nested within it. Even though you disable a field group from surviving as a block, field groups nested within the field group survive as a block. You can disable the nested field group from surviving as a block and configure individual survivorship configurations for the fields within the nested field group.
For example, consider a bank field group with a bank name, bank account number, and bank address. If you disable block survivorship for the bank field group, you can configure different survivorship rules for the bank name and account number.
In the current release, each field group within a dynamic field values attribute is considered a block.
If you enable block survivorship, any existing survivorship configuration of fields and nested field groups is overridden.