IIRC, there is some software called 'Acronis true image', it should be able to clone it.
I doubt any disk imaging programs would recognize an Amiga SFS or FFS volume. (And they do need to recognize the volume type for copying between drives of different sizes, geometries, etc. Even cf cards have an emulated geometry...)
Really, copying it in an Amiga environment is probably best. UAE should be able to read that cf.
* Boot UAE with the cf mounted and an extra empty hardfile.
* Copy the contents of the cf to the empty hardfile.
* Quit UAE and swap the cf cards.
* Reboot into UAE and copy the contents of your hardfile to the new cf card.
I see no reason that shouldn't work.