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.