Backing patch 5.0.4 downloaded data.

Hi All,
I plan to re-install today my system including wow and everything before i do that is it possible to backup ( copy somewhere else the data downloaded for patch 5.04 and after i finished installing to copy back to wow directory? It will work or do i need to re-download the whole patch data?

FAIL (the browser should render some flash content, not this).

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