Yes, we recently converted a small Inmagic system to Koha.  They did not use circulation but the bibliographic data came out easily from the menu (File > Export).
We chose the Inmagic format as it seemed a more predictable output format for processing.
We had to stitch the continuation lines together and handle repeatable fields for such as keywords.
Say if you want any more information...
Ian
On 25/10/2010 22:56, Joann Ransom wrote:
Does anyone know whether a conversion has been done from inmagic to Koha?

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Joann Ransom RLIANZA
Head of Libraries,
Horowhenua Library Trust.

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Ian Bays
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PTFS Europe.com
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