Project Copy Doesn't Carry-over Build Trigger "Successful" Flag

We typically copy existing projects into new ones so work can be done on a new branch.  I've noticed that since one of the 6.5 releases, the "Trigger after successful builds only" flag doesn't appear to get copied over anymore.  Is this a bug?  If not, is there a reason to not replicate this setting?  This is a real annoyance since we have to go back and update every project  step.