following a "lost" branch

Hi,

first, let me thank all people behind subversion for a great tool!
Although I've been using svn for many years, this is my first post here;-)

In a current project I had created a branch (branches/mine) of another branch (branches/lutz). I am implementing a nice addon in my branch that shall go back to trunk/ sometime soon. However, yesterday branches/lutz was "merged" into trunk/ – to me it seems as that was done by a strange sequence of deletions/moves/copies.

Now I am looking for a way to keep automatic merging alive. I believe I have to formally "ignore" one revision for that to work.

Anyhow, I have merged all changesets from branches/lutz (which goes to r1380, so I merged up that that revision) into branches/mine.
Then I have merged r1382:HEAD from trunk/ into my branch, which works fine.

r1381 was the "move" of branches/lutz to trunk/, which I want to ignore because it pulls a lot of strange and "wrong" actions (resulting in infinitely many conflicts) into my branch.

I assume I can continue to manually specify which changesets to merge.
However, is there a way to tell svn (the repository) to permanently ignore r1381 for merging?

Greetings,
Jochen

-- 
Fritz-Haber-Institut der MPG - Department of Molecular Physics - Manipulation of Large Molecules
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http://www.fhi-berlin.mpg.de/mp/jochen