Understanding Society User Support

Hi Support Team,

I am doing two types analysis: One is a repeated cross-section of households and the other is a panel of adults. I want to use waves A-K of UKHLS for both of these. I identified hhdenub_xw and psnenus_lw as the respective weight variables I should be using, but these are not available for wave A. My intuition is that this is because of the introduction of the BHPS sample in wave 2 (is this correct?). Is there a way to derive values of hhdenub_xw and psnenus_lw for wave A, or are there alternative weights that would allow me to use all 11 waves?

Thanks for your time