If you have changed activity scores in the Sakai gradebook, your changes might be overwritten by manually syncing scores from WebAssign. To prevent this, edit WebAssign scores in the WebAssign gradebook.
Sync Scores to Sakai
After adding activity links from Sakai, your students' WebAssign scores sync to Sakai based on your settings. If needed, you can manually sync scores to Sakai.
How-toInstructor HelpWebAssign