Following on from your last reply, you are correct that the files are saved in the ProgramData folder. They will be stored as files with a long file name. To actually get them opened in Qlik Sense Desktop for example or to import them into other servers you can simply rename the file extension to .qvf.
Another alternative is to actually export the required app from the management console of your server.
Please mark this response as correct and helpful if you are satisfied with my answer.