We actually landed in a similar place, but used a different snippet to
get there. I think you'd want the below to show completed milestones (on
a Project level report) - displayname=Completed
Milestone(s)listdelimiter=listmethod=nested(tasks).liststextmode=truetype=iteratevalueexpression=IF(ISBLANK({milestoneID})=0,IF({status}="CPL",{milestone}.{name},""))valueformat=HTML
Replace "CPL" with whatever your "Completed" task status key is.