Remaining work adding to plan for past tasks

[Wendy]

Hello,

I have a PM who, when accepting actuals from timesheets, is having
remaining work increased for tasks from October. He is not accepting
from the Updates page that has to do with these changes. All time
periods in the past are closed. Any advice as to how remaining work is
showing up for his plan for various users? He has gone back in to zero
out remaining work and republished assignment yets the issues
persists.

Thanks for your help,
Wendy