I created a product v0.8 beta and set trial expiration to 15.06.2009. At 09.05.2009 I created new version of product (v0.9 beta) and set trial to 08.08.2009. Do I have to change the "Trial Unique Key" in the Software Panel

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I created a product v0.8 beta and set trial expiration to 15.06.2009. At 09.05.2009 I created new version of product (v0.9 beta) and set trial to 08.08.2009. Do I have to change the "Trial Unique Key" in the Software Panel

If you modify the Trial settings (in this case you are modifying the expiration date) and you already have a previous version protected (and released to public), you have to change the "Trial Unique Key", so, for those users who are running an older version of your application, the new version will expire on the new date that you set.