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Open the project file or properties file in editor, open project properties and edit them, close the dialog. The files are modified and if unchanged could be simply reloaded w/o asking.
*** This issue has been marked as a duplicate of 50992 ***
This issue was solved long time ago. Because nobody has reopened it neither added comments, we are verifying/closing it now. If you are still able to reproduce the problem, please reopen. Thanks in advance.