Hi @JRobertshaw,
At this stage, tasks cannot be enrolled in workflows, which means that it’s not possible to automatically assign tasks from one user to another.
Luckily, there is an option to bulk update multiple tasks to a new owner. Navigate to Menu > Sales > Tasks and select the user under “No assignee”:
Once this filter is active, select all tasks:
Click Edit, select Assignee and choose who the tasks should now be assigned to:
There isn’t any out-of-the-box option to re-assign these tasks to the new owners of the deals. You could review your deal-based workflow that is creating the tasks and whether you could set up re-enrollment: You could add “Deal owner is known” as an enrollment trigger and active re-enrollment based on that criterion.
HubSpot interprets “known” as “has changed”, too, so the deals would re-enroll once the owner changes and the tasks would be created anew. You could then find the old owner’s tasks and delete them.
(The workflow can of course only be change if it’s only creating tasks, not if there is any other automation happening that you do not want to repeat, e.g. internal or external notifications.)
Hope this helps!