I must also mention that you need to upgrade to PostgreSQL >= 8.x before migrating to LedgerSMB, which kinda bit me. :) And I had problems with the migration scripts, which I had to run manually, probably because my SQL-Ledger database was created using a custom Gnucash import script. I've summarized my transition notes in: http://wiki.koumbit.net/LedgerSmbTransfer A.
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