Final answer:
To correct the issue where Contact field information does not propagate to child cases from the parent case, you should check the configuration of your system.
Step-by-step explanation:
To resolve the issue where the Contact field information is not automatically propagating in the child case when opening a new case from the parent, you need to check the configuration of your system. Specifically, you should ensure that the proper relationship and lookup fields are set up between the parent and child case objects.
You can start by checking the lookup field on the child case object that references the parent case. Make sure it is correctly mapped to the Contact field on the parent case object. Additionally, check if any workflow rules or process builder flows are affecting the field mappings and consider adjusting them if necessary.
If the configuration seems correct, you can also check the automation triggers like process builder, workflow rules, or Apex triggers that may be overriding the default field propagation behavior. Correcting these triggers or modifying their logic can help in propagating the Contact field information to the child cases when opening a new case from the parent.