BelalM

"I see the question does increase/decrease in expected return to do Pension accoutning as far as PBO? Funded Status? and Pension Expense?"

only pension expense = svc cost + interest cost - E(ROA) + amortized stuff

PBO is the liability so the expected return of the asset won't affect it.

funded status is FV plan assets - PBO and the fair value of plan assets are affected by ACTUAL returns, not expected returns.