It happened to me as well, no tone, the missiles hit the ground (according to the tacview) but the slmod recorded an aim7 kill.
Here is the tacview file, the fight is at the very end of the recording (Rayak vs Haywire) Tacview-20190104-175927-DCS-First in the hell PVP_SRS_LOT4ATC V4.5.zip.rar