Hi ChrisP
Thank you for your post. At this stage, the only way to remove that duplicate transaction is to delete the QIF file and reimport a correct file (which yes, will unfortunately undo all the allocations).
Other posts you might have seen where we have been able to delete duplicate transactions are done from the Bank Feeds system, so would not be able to affect a transaction imported through a QIF file.
Please let me know if you have any further questions.
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