Duplication when creating new pages

Hello.
When I create a new page and duplicate it in Chrome, some of the completed fields are not saved.
Such as:
Ruling authority
Commemorated event
Series
Fineness
Engraver / Designer (for both sides)
Mintmark, Mint and Picture

However, some fields were previously duplicated.
Is it possible to ensure that all these filled fields are saved in duplicate pages?

Thank you.

Those are all drop downs and the contents are hidden so you have to deselect and reselect them.