[Koha] Record matching for biblios without ISBN or ISSN

[Elaine Bradtke]

Ours is a rather quirky collection, I know.  But an awful lot of it
doesn't have an ISBN or ISSN (1364 biblios in a collection of 1664
fall into this category). I am working on a project to batch change
all the biblios in a particular collection. Selecting them,
downloading them, and editing the MARC records was easy.  Now I would
like to upload them and overwrite the old records.  This only seems
possible for the 300 biblios with an ISBN.
We have unique internal control numbers (001).  Is there any way I can
match the records with this field instead?
If not, what are my other options?
-- 
Elaine Bradtke
Data Wrangler
VWML
English Folk Dance and Song Society | http://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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Registered Company No. 297142
Charity Registered in England and Wales No. 305999
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"Writing about music is like dancing about architecture"
--Elvis Costello (Musician magazine No. 60 (October 1983), p. 52)