SVN, How to merge single change from other branch?

I'd like to merge single change from other branch to currently checked out branch.

Using command line tool it's achieved by:
svn merge -c 12345 protocol://username@hostname/svnroot/project/branches/targetbranch

and then just: svn commit, to commit it to current branch.

I tried Version Control->Integrate Project... and new merge option that came in 9.0.3 CE, but when I input my change number (12345) to specified revision field it always merges all changes between 12345 and HEAD.