How to move some changeset to a new branch in mercurial

Question

I want to move a changeset from one branch to another. Basically, I currently have:

A -> B -> C -> D # default branch

And I want:<

Answer 1

With Mercurial Queue:

# mark revisions as draft in case they were already shared
#hg phase --draft --force B:D
# make changesets a patch queue commits
# (patches are stored .hg/patches)
hg qimport -r B:D
# pop changesets from current branch
hg qpop -a
# 
hg branch some_new_branch
# push changesets to new branch
hg qpush -a
# and make them commits
hg qfinish -a

Without comments:

hg qimport -r B:D
hg qpop -a
hg branch some_new_branch
hg qpush -a
hg qfinish -a