Understanding Society User Support

Dear Understanding Society Team,

I want to use the information if a respondent has died in one of the waves. There is no linked death registry data available but at least dcsedfl_dv (Respondent reported as deceased?) + dcsedw_dv (Wave respondent deceased) is available.
If I tabulate the frequencies for dcsedw_dv I get:
UKHLS Wave 20, UKHLS Wave 21, etc.

The timeline and naming of BHPS and UKHLS waves:
https://www.understandingsociety.ac.uk/documentation/mainstage/survey-timeline/
dcsedfl_dv starts with value labels from UKHLS Wave 1.

There are no UKHLS Wave 20, UKHLS Wave 21 existing and the correct value labels for the variabledcsedw_dv (Wave respondent deceased) would be UKHLS Wave 1, UKHLS Wave 2, etc.

Thanks,
Alexander