When upgrading to a newer version of Quicken, Quicken automatically uninstalls the prior version for you. Quicken does not remove your data files as part of uninstalling the previous version. The files remain in their same directory.
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The first time you open Quicken after the installation of the new version is complete, Quicken converts the data file you last worked in. If you find that an incorrect file was converted, or if you have another file to convert:
Unlike earlier versions, Starting in Quicken 2010, the data file structure for Windows no longer contains separate supporting files. (Supporting files have file name extensions like .QEL, .QPH, and .IDX.) Instead, the supporting files have been incorporated into a single Quicken data file with the .QDF file name extension. Also, if you have file attachments they are included in the single file as well. This simplifies the Quicken file structure and, as expected, makes it larger.
Is your data file on another computer? Let's move it over together.
If you need help converting your data to Quicken from a different product or platform, take a look through these articles: