Import backup into managed deduplication centralized valut

Good afternoon,
I want to switch from unmanaged valut into managed deduplication one. So I created managed valut and now I need to import existing data from unmanaged valut. I can't find anything in documentation (http://www.acronis.com/support/documentation/ABR11.5/index.html#12117.h…).

Exactly what I need was possible with ABRW10 http://kb.acronis.com/content/6190

Thanks for advice!
Jan Kuchar