Public bug reported:

I have two branches of gcc-4.6 packaging for my daily builds of gcc-
linaro (native and cross):

lp:~hrw/ubuntu/precise/gcc-4.6/gcc-linaro-ci-cross  (named 'ci-cross' later)
lp:~hrw/ubuntu/precise/gcc-4.6/gcc-linaro-ci-native      (named 'ci-native' 
later)

In previous week I merged lp:ubuntu/gcc-4.6 into 'ci-native' one and got
some merge conflicts (which were expected). I handled them and commited
(rev 72). Then I made few other commits and finally pushed branch to
server (rev 76).

Today I decided to merge 'ci-native' into 'ci-cross' to get this merge
and all fixes at once. So I branched 'ci-cross' (rev 82) and then called
"bzr merge lp:~hrw/ubuntu/precise/gcc-4.6/gcc-linaro-ci-native". Bazaar
told me that this is 'criss-cross' merge and pointed to documentation.
Merge resulted in 8 files conflicted which was a surprise for me cause I
expected bzr to know that those conflicts were fixed by hand already in
'ci-native' branch.

I tried "bzr merge --lca" and "bzr merge --weave" but each time I had same 8 
conflicted files. Now I am wasting my time resolving all conflicts again and I 
am happy that I do not have more such branches.
--- 
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
DistroRelease: Ubuntu 12.04
InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 
(20100419.1)
Package: bzr 2.5.0~beta4-1ubuntu1
PackageArchitecture: all
ProcVersionSignature: Ubuntu 3.2.0-4.10-generic 3.2.0-rc5
Tags:  precise
Uname: Linux 3.2.0-4-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare 
vboxusers video

** Affects: bzr (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-collected precise

** Tags added: apport-collected precise

** Description changed:

  I have two branches of gcc-4.6 packaging for my daily builds of gcc-
  linaro (native and cross):
  
  lp:~hrw/ubuntu/precise/gcc-4.6/gcc-linaro-ci-cross  (named 'ci-cross' later)
  lp:~hrw/ubuntu/precise/gcc-4.6/gcc-linaro-ci-native    (named 'ci-native' 
later)
  
  In previous week I merged lp:ubuntu/gcc-4.6 into 'ci-native' one and got
  some merge conflicts (which were expected). I handled them and commited
  (rev 72). Then I made few other commits and finally pushed branch to
  server (rev 76).
  
  Today I decided to merge 'ci-native' into 'ci-cross' to get this merge
  and all fixes at once. So I branched 'ci-cross' (rev 82) and then called
  "bzr merge lp:~hrw/ubuntu/precise/gcc-4.6/gcc-linaro-ci-native". Bazaar
  told me that this is 'criss-cross' merge and pointed to documentation.
  Merge resulted in 8 files conflicted which was a surprise for me cause I
  expected bzr to know that those conflicts were fixed by hand already in
  'ci-native' branch.
  
- I tried "bzr merge --lca" and "bzr merge --weave" but each time I had
- same 8 conflicted files. Now I am wasting my time resolving all
- conflicts again and I am happy that I do not have more such branches.
+ I tried "bzr merge --lca" and "bzr merge --weave" but each time I had same 8 
conflicted files. Now I am wasting my time resolving all conflicts again and I 
am happy that I do not have more such branches.
+ --- 
+ ApportVersion: 1.90-0ubuntu1
+ Architecture: amd64
+ DistroRelease: Ubuntu 12.04
+ InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 
(20100419.1)
+ Package: bzr 2.5.0~beta4-1ubuntu1
+ PackageArchitecture: all
+ ProcVersionSignature: Ubuntu 3.2.0-4.10-generic 3.2.0-rc5
+ Tags:  precise
+ Uname: Linux 3.2.0-4-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare 
vboxusers video

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https://bugs.launchpad.net/bugs/906370

Title:
  merging generated conflicts which were resolved in merged branch

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