The Total labor effort field in idea page/screen is not same as Total labor effort in portfolio investment screen.
Release : 15.8
Component : CA PPM PORTFOLIO MANAGEMENT
It was determined that it is not something we will be changing for portfolios in Classic. We would advise to use modern UX Hierarchy, this is our direction for the product. In a mean time if you have to use Portfolios in Classic you can use Total Effort column instead Total Labor Effort.