info command does not show bound location if branch is in repository with no trees

I have a bunch of branches inside a repository with no trees. Each
branch in this repository is then bound to a remote branch for backup
and so that I can work from other machines. When I do "bzr info" inside
one of these branches in the repository (that has no tree) I am not told
the location that the branch is bound too. However, if I make a
lightweight checkout of this branch then bzr info displays this
information in the lightweight checkout. I don't think the bound
location has anything to do with whether there are trees or not so why
isn't this info always shown?

It would be useful because when I create a new local branch in my
repository I would like to then push to remote location and then bind to
it. If I could do info command in one of the other branches and
copy/past/edit that location for the new branch that would save a fair
bit of typing and possible errors.