[Koha-bugs] [Bug 16556] KohaToMarcMapped columns sharing same field with biblio(item) number are removed.

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16556

Nick Clemens <nick at bywatersolutions.com> changed:

           What    |Removed                     |Added
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  Attachment #55083|0                           |1
        is obsolete|                            |

--- Comment #7 from Nick Clemens <nick at bywatersolutions.com> ---
Created attachment 55141
  -->
https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=55141&action=edit
Bug 16556 - KohaToMarcMapped columns sharing same field with biblio(item)number
are removed.

REPLICATE ISSUE:

1. Map biblio.frameworkcode to 999$b
2. Map biblio.biblionumber to 999$c
3. Add a record with something in 999$b
4. 999$b is removed by C4::Biblio::AddBiblio()

After this patch, the field used by biblio.biblionumber or
biblioitems.biblioitemnumber
is not removed and created anew, thus dropping all existing additions.

There is no point in dropping the field in any case, since we can just replace
the existing subfields in-place with no need to recreate the whole field.

UNIT TESTS INCLUDED

Signed-off-by: Chris Cormack <chrisc at catalyst.net.nz>
Signed-off-by: Nick Clemens <nick at bywatersolutions.com>

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