Package: debbugs Severity: normal Control: retitle -1 -done messages with only a Version pseudoheader do not get turned into fully qualified verisons; see #729576. The format is source_package/version; plain version is coerced into source_package/version if version corresponds to a valid source package version (or binary package version which corresponds to a valid source package version). Forcemerge tries to do the modification, but because #729576 is marked as fixed in 204-9 instead of systemd/204-9, it fails. For safety, forcemerge won't try to modify the first bug given, so it's going to fail. The real issue here is that 204-9 should never have been just 204-9, but should have been coerced into systemd/204-9; this is probably a bug in -done handling which is exposed when you just give a Version pseudoheader without a Source pseudoheader... and should be fixed.