About the customfields created by this plugin

Hello,

This is about these two fields created on new posts:

1. permalink_customizer
2. permalink_customizer_regenerate_status

I’m asking because I noticed that number 1 doesn’t change in value even if I change and save the custom URL below the title tag or whenever I clone via duplicate post plugin (it retains the value of the cloned post). Should I manually update it as well before saving?

For number 2, I also haven’t seen any difference whether the value is 1, 0 or even if it is deleted. Could you tell me if it is ok to delete it whenever I’m duplicating posts?

Thanks!