[phenixbb] autobuild

Dear phenix community. We would like to 'fix' the residues of our current protein model, and use Autobuild (perhaps via rebuild-in-place=false, which is what we've been trying) to add missing residues to our current model . However, our efforts thus far have only resulted in models that get rebuilt from scratch. Is it possible to just 'add' residues to a current structure using Autobuild? If so, is someone could share the correct command with us, we'd be very appreciative. We can't seem to find it. Thanks in advance, Rebecca