The master records for the new task and the initial one are computed as the following:
- If the initial or new task has only one source left, the new task uses the source values for all attributes.
- If manual changes were performed on a given attribute, these manual changes are kept for both the initial and the new tasks.
- If one source was explicitly selected for a given attribute, this source value is kept for the task to which it belongs.
- Otherwise, the attribute is computed according to the rules defined in the campaign.
The selected source records are removed from the current task and grouped in a new task which is added at the bottom of the list. Any comments attached to the task to split will be kept for the initial task and removed from the new one.