I have created an app using dot.net 2005 for the SmartPhone PPC 2003 version

I want to be able to run it on PPC 2002

So simple I thought open my app then open a new app in dot.net 2003 and then a quick copy and paste of controls and code and then sit for a few hours and sort it out.

But no I am unable to copy and paste between the 2 IDE’s why is this? I can copy in 2005 but when a switch to 2003 the paste is greyed out