Add this futures in app inventor please
1)Copy Screen
2)Delete Screen
3)upload Screen
4)Download Screen
Note that item #2 has been in the system since multiple screens were supported. Item #1 can mostly be done by selecting the original screen, pressing Ctrl/Cmd+C, then creating a new screen and pressing Ctrl/Cmd+V to paste. Items 3 and 4 are basically the same as the previous item. Why do you need to be able to export individual screens?
copying a screen is not considered good programming practice...
DRY Don't repeat yourself
you should separate data and logic and with for example only one screen together with the logic you can handle as much data as you want... no need to copy screens...
http://ai2.appinventor.mit.edu/reference/other/manyscreens.html
See also tip 1 here General Tips and Tricks for App Inventor
Taifun
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