import new copy of webdynpro application using ZSAPLINK

HI,

I want to take a copy of a webdynpro app ,then i found that ZSAPLINK , but when i want to import the webdynpro after i exported it , an error message shown with

" Web Dynpro Component Zwebdynpro already exists. Use overwrite orginals option to replace"

how can i take another copy of existing app?

thanks in advance.