How to clone a folder of filters in NS 7.1

Hello,

I have a folder with tens of custom filters in it. I need to create another folder and then slightly modify the definition of the original filters. I can clone a single filter but it is very time consuming. What I would like to achieve at once is:

- clone the folder with all items in it

- export the folder

-modify the defintions in xml

-import the folder back

Or maybe there are other ways of cloning large number of items ?

Thanks

Romasz