How to post timesheet entries to a different activity (WBS element) after initial time entry

Dear all,

my task subordinate has posted his timesheets to the incorrect activitiy (R&D project). Now I privation to determination the entries to the close enactment without deleting and re-entering of each clip record.

What is the champion mode to determination timesheet entries from 1 PSP constituent to another?

Thank you.

BR

Dirk