Are you talking about creating a FS BP?
Here is a blog which explains the reason why it changes to view BP_HEAD instead of BPFS_HEAD after EHP3, it also provides a way to reuse the previous component:
Would you please let us know more details like:
Which class the do_config_determination belongs to, and what is the default value you set? What's the purpose to set default value? To determine your own configuration? or to determine the target view and make it to be BPFS_HEAD?