[Koha] Mark a batch of items as missing?

[Mark Alexander]

Excerpts from Katrin Fischer's message of 2020-03-26 16:28:05 +0100:
> check the settings for the subfield in your bibliographic frameworks and
> make sure it's not hidden.

Thank you for this hint.  It turns out that in the default bibliographic framework
in our installation (upgraded to 19.05.04), the 952$1 field (lost status) is hidden.
The manual warns against trying to edit the default framework, so I won't change
this setting.

Unfortunately, when I imported our catalog from Mandarin back in 2017,
I wasn't aware of this issue and all of those items seem to be using
the default framework.  Newer items added that I've added are using
the books framework, in which 952$1 is not hidden, so the lost status
appears in the item editor.