If needed, you can export your filtered view of the Planner Space, including work plans.
To export Work Plans from the Planner view:
Select the three-dot button next to the Sort option.
Select Download from the dropdown menu.
Choose the desired file format:
Unformatted CSV
.CSV:
By Phase
By Member
.XLSX:
By Phase
By Member

For more details on the data included in exported files and to view a sample export, please refer to this article