Cannot edit certain publication attributes created during citation import

Sometimes when I add publications using the import feature, there is publication information that gets imported that I have no way of editing.

Usually it's something like the DOI so it's fine, but occasionally there will be incorrect/incomplete information, such as in the following example:

I downloaded the BibTEX file from the official journal website and imported it. On the publication detail page, it says:

Date Published:

Obviously this makes no sense and needs to be fixed, but in the edit publication interface, there is nowhere I can modify this field. Even expanding "Publication Details" at the bottom, there is nothing under "Extra Fields," so I don't know where the above imported information is stored.
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