Use a server that does not support/advertise v2. Use the current client and execute svn mkdir -mm URL or svn cp -mm URL1 URL2 and arrange for MERGE to fail (this could be a concurrent commit or something like disk-full). The client does not send DELETE after the failed MERGE. If the same commit is made from a working copy then the client does send DELETE. The server deletes the transaction automatically, by calling svn_fs_abort_txn in mod_dav_svn/version.c:merge, but not the activity.