Hi Andrew – Insert the actual duration, actual work, remaining work, remaining duration fields in your view. Actual duration and actual work should be effort spent, and the remaining work and remaining duration should be zero for completed tasks. Also, % complete and % work complete should be zero of completed tasks.
Also, give more information on these tasks that doesn’t 100% complete right a) Whether the “Updating Task status updates resource status” in Schedule (File > Options) is on/off? b) If possible take screenshot of the project plan, and share it in this thread