After installing new localized release (Russian) I don't see earlier created and saved applications with international release 1.01. But I found saved applications in Apps foulder with new created application.
You will need to add the existing apps to the Sites.xml file for them to display. In a default install, the location is: C:\inetpub\wwwroot\Builder\App_Data\Sites.xml. Each app needs a unique ID, and you can use something like http://www.guidgen.com/ to generate a Guid. Let me know if you have more questions on this.