On my most recent trip to Europe, the SQD have posted for all AC segments, but add up to the base fare without carrier surcharge, which would seem to be a systematic issue?
All my LH AC codeshare 014 flights this year have posted with no SQD. All but the most recent have separate SQD correction lines on the correct flight date, usually posting about a month after flying, except the last, which was now 6 weeks ago.
Currently down by over 2250 SQD, which would put me over 20k for the year...