Burdened Cost in Project Currency

Hi Team,

While checking one of our projects, I checked one of the associated Purchase Order transactions and noticed that the PO was closed. I then ran the project variance report, and as expected, the capital commitments were cleared to zero. But, when I ran the Committed Cost report, I noticed that the amount I was still expecting to see in the Capital Commitments appeared in the "Burdened Cost in Project Currency" column. Please refer to the attached screenshot for reference.

This issue won't prevent us from closing the project since the amount isn't in Capital Commitments, but I'm unsure where this will show up on the project. Could you help me understand how the Burdened Cost is being calculated? Specifically, why is it zero for some transactions but shows up for this particular one? Also, why is it a negative value? I also came across the term "burden multiplier." How is that calculated, and how do we determine the multiplier value?