[Joel]

You can't upgrade to the non-educational version of OmniGraffle 5 Pro, but we have no problem with your continuing to use the educational license you purchase even after you stop being in that market. After version 6 comes out, you'll be able to pay the standard upgrade price to go to OmniGraffle 6 sans the educational discount.

When you eventually (we certainly hope so) upgrade to OmniGraffle Professional 6 and do so in a non-educational manner, the [EDUCATIONAL LICENSE] string will be removed from the new license key.

Lastly, there are no restrictions or limitations to the educational versions of any of our applications.

Cheers,