Category and Sub-category

Please help,
Check this image: https://imgur.com/yrTun4Y
When selecting a Sub-category for a post, once the subcategory is checked and saved it moves to the top of the list and you cannot tell from what main category it was under.

Is there a way to always keep these in the same order so the subcategory ALWAYS stays under the main category.? Right now once you check a category it moves it to the top and does not show it as a subcategory.

This can be very confusing to clients since there are some categories with the same name under the different main categories.

Check this image: https://imgur.com/yrTun4Y

Thank You.