I agree that you should be able to track down the original file as long as you have access to the original computer. That is the best route.
That said, at one point Quicken did provide a means to create a new data file from the Quicken Cloud. This is really intended for when someone starts using QWeb first, then eventually wants to create a desktop data file. I know there were problems with this so I am not sure if all the issues around this have been worked out. But this is not a method I would depend on, as it carries some risks, one of which is that if Quicken sync was ever reset, the data on the cloud would only start with the last 2 years of data from the desktop data file, so QWeb may be incomplete. In other words, it cannot be relied upon as a backup strategy.
@Ron Myers You shouldn't need to lose your history moving from one computer to another. Do you still have access to your old computer? The original live data file, as well as Quicken-generated backups, should be on the old computer.
And it's possible the backups were transferred to your new computer as well. In the Finder, hold down the Option key and pull down the Go menu to select Library; then open the Application Support folder and look for a Quicken folder. within that, look for the Backups folder to see if it contains any of your old data file backups or only the one since you started on the new computer.
