Is there a possible way to copy presets from one filter to another?

When I am making filters I make different versions of the same filter, and sometimes when experimenting I get wrong presets, or they are destroyed with some bad setting and you can´t recover them, but I have the original presets in another filter.

IMPORTANT: If you are going to copy presets from one filter to another, BOTH filters must have the same components arranged in the same way, because if they have different components the presets will not work as they will give wrong results. The settings of both filters can be different.

There is no copy presets option available in FF 4.0 and so I wonder:

1 - Is there a possible way to copy only factory presets from one filter to another?

I have thought that maybe it could be done opening the original filter in an XML editor and search for the presets information, copy it and then open the destiny filter, and paste this presets XML data inside the filter and they would be included as presets of that filter.

2 - Is there a possible way to copy user-created presets from one filter that has factory presets to another?

Well, it would be the same idea as above, but the user-created presets are NOT stored inside the filter itself, they are in another separate external file in the "My presets" folder

3 - Is there a possible way to copy user-created presets from one filter that has NO factory presets (all presets are editables) to another?

It would be the same as above, but in this case there is no separate XML file created in the "My presets", and all the presets of the filters are inside the main filter file in the same as it happens in point 1

Quote

This text below comes from the Presets Help page Presets are handled differently for user-created filters (those located in the My Filters category) and filters downloaded from the Filter Library. For user-created filters, all presets are editable and are stored inside the filter file (.ffxml), so if you send the file to a friend, all presets will be sent with the filter as well. For the filters downloaded from the Filter Library, however, the presets that come with the filter are called 'factory presets' and are not editable – only the presets added by the user are editable, they are marked with a 'dog-ear'. For these filters, the factory presets are stored inside the filter file, and the user-added presets are stored separately.

Please if you have any other possible way that you could know to copy presets from one filter to another would be very good to know about it

I had before some XML editors installed in my computer, but since my windows 7 broke (after more than 2 years of use) I have installed Window 8 and now I do not have any to try it now.

Will search for a new XML editor and try if this told above works or not.

Thanks very much