dump and soft-updates question

[Gema niskazhu]

Hi!

I-ve got a question about dump | restore on soft-updates managed slice.

When we dump smth on soft updates slice where it actualy(mechanicaly) dump
it?

Because I-ve forgot to turn of soft-updates off on my backup hdd and dump
img on it =)

After that i vas quet surprised because it ate 16 Gigs of / but du\df cant
show anything about.

what is situated in this 16 Gigs.

PS:Sorry for my bad english.

Cheers --Vasily