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Here's the troubleshooting guide; if you can't find your answer in here, then you should contact support.
Are you using more than one type of Conversion?
If so, choose those in the Report settings. I believe the "conversion" is unique and only occurs once, but if you break it down by transactions, you should see what you are looking for. You can also add Sales count, Lead count, Signup, Pageview, and Other depending on what you choose the "conversion" to be.