When reviewing a patch set it is sometimes necessary for the commiter to amend the patch set. In this situation it is for the reviewer very helpful to set the "Reference Version" for the diff against the previous (reviewed) patch set. But patch sets for gerrit patch uploader seems to need always a rebase to current master which breaks the diff and makes the work of reviewer harder (at least for me).
It is possible to allow the upload of amended patch sets against the same parent as the existing patch set? Like normally done by commiter when not using gerrit patch uploader?