Not work converting Pth to Onnx with Bnkps option

I tried to convert scrfd pth into onnx , so I used config file in the 'scrfd/configs/scrfd' folder.
ex : scrfd_2.5g_bnkps.py
But the generated onnx does not work.
the onnx converted without kps option is work, but it can not get keypoint information by that onnx.
what is issue?
I compared two config files of 'scrfd_2.5g.py' and 'scrfd_2.5g_bnkps.py'.
Only difference of both file are just norm_cfg setting.
dict(type='GN', num_groups=16, requires_grad=True) and dict(type='BN', requires_grad=True).
Another code are same.
I think the converting code does not work on kps option