I just wanted to merge a series of commits to py3k where the first added a new file, and the others changed it. Output was:

property 'svnmerge-integrated' deleted from '.'.

property 'svnmerge-blocked' deleted from '.'.

--- Merging r71409 into '.': A Doc/tools/sphinxext/static/basic.css

svnmerge: command execution failed (exit code: 1) svn --non-interactive propdel "svnmerge-integrated" "." svn: Attempting to delete nonexistent property 'svnmerge-integrated'

As the error message indicates, the svnmerge properties are *deleted* in this case. Committing will delete them in the repo as well. Doing an "svn revert -R .", deleting the added file(s) and starting over, going through the revisions one by one, seems to work.

Georg