If you have changed activity scores in the LMS 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 LMS
After adding activity links from LMS, your students' WebAssign scores sync to LMS based on your settings. If needed, you can manually sync scores to LMS.
How-toInstructor HelpWebAssign