Issue: When using the convert button, the newly created citation may not be an improvement over the old, or, in some cases, an entirely different resource if there's no canonical identifier in it like doi/url.

However, it's hard to tell that the new citation is worse than the old one, because the user can't see both on the same screen.

Solution:
Render the old citation to be replaced above the new one, so they can decide if the new one is an improvement, or not. That way the user can make a more informed choice.