P6- Reset Panned Value to match Period Actual. "re-baseline" project

 Project is Role Loaded with budgeted cost which is distributed across the planned period financial periods. The project got off to a slow start and after 6 months, the team decided to re-baseline the project. I have attempted to find a way to change the planned value cost to equal the actual financial period cost for activities that are in progress and not yet completed. I attempted to use the layout for future period bucket planning, but the field is not editable. Keep in mind that this is a role loaded schedule and not resourses, so I want th buckets to be in