[Koha] Local use preference OPACviewMARC doesn't switch off?

[Elaine Bradtke]

As an experiment, we thought we'd switch this off  because there's some
information in the MARC record that we need internally but would rather it
wasn't displayed in the OPAC.

However, when I switched OPACviewMARC off and saved the change, it didn't
seem to make a difference.  Is there something we need to run behind the
scenes to make this work?  Usually when I make changes it's visible
immediately.
We're using 21.05.04

Elaine Bradtke
VWML <https://www.vwml.org>
English Folk Dance and Song Society <https://www.efdss.org>
Cecil Sharp House, 2 Regent's Park Road, London NW1 7AY
Tel    +44 (0) 20 7485 2206 (This number is for the English Folk Dance and
Song Society in London, England. If you wish to phone me personally, send
an e-mail first. I work off site)
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