> 
> > I wonder if it's possible to save all files in cache
> > but without saving its content data. Im figuring out that if I
> > specify "-k", I will need double room to save, on
> > the one hand, the site structure with its corresponding
> > files and, on the other hand, the content of all those files
> > (compressed) inside "new.zip" (and this size is even greater 
> > because if I try to update, I will have to add size(old.zip)!)
> 
> You can turn off the cache completely if you don't need to update the
project.  

I do need to update the project.

Or you can delete old.zip when you have finished an update.

That solves half the problem, but thanks anyway...