Parse nodes from step->outputs[]->step->outputs[]->step instead of step1->step2->step3->step4
Parse nodes from step->outputs[]->step->outputs[]->step instead of step1->step2->step3->step4

hms-dbmi/fourfront,hms-dbmi/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,hms-dbmi/fourfront,hms-dbmi/fourfront,4dn-dcic/fourfront,4dn-dcic/fourfront,4dn-dcic/fourfront