300LP flip sample problem

[vdgs]

I find in 300LP dataset, the flip sample label headpose doesn't match the origin sample label. For example the headpose of HELEN/HELEN_212515672_1_3.mat is (0.077, 0.27, -0.34) but HELEN_Flip/HELEN_212515672_1_3.mat is (0.019, -0.245, 0.36)，It
seem not sense as flip sample is (-yaw, -roll, pitch) in my opinion. What do you think?