Undo a wrong merge with Bazaar

[Eli Zaretskii]

> From: TRIDENT JOB <trident_job at hotmail.com>
> Date: Thu, 19 Jun 2014 18:56:40 +0000
> 
> I have an issue while using Bazaar and I would like to get the best practices to fix it. Here is the context:In the trunk of our project, one wrongly merged a branch (BranchA) in the trunk but he used revert on most files while keeping the merge info (so from bazaar BranchA was effectively merged in trunk, preventing to REALLY merge it later).
> The merged revision was committed as r4.After this (undesired) merge, many devs committed right after (r5 & r6).So my question is : how to undo this wrong merge ? (while keeping the commits after).I tried to uncommit back to r3 and merge each rev from r4 to R6 (omitting r4)
> I tried 'reverse cherry pick' r4 ... but the BranchA merge information may still memorized.trunk
>   |
>   r6
>   |
>   r5
>   |    branchA
>   |     |
>   r4 ---+
>   |     |
>   |    r2.2
>   |     |
>   r3   r2.1
>   |     |
>   r2 ---+
>   |
>   r1

Doesn't "bzr merge r4..r3" does what you want?  If not, why not?

And waht do you mean by "the BranchA merge information may still
memorized"?