Haven't been able to pinpoint steps; couldn't deliberately reproduce. But I've seen it happen twice now:
Given a 2-stage LV with a TLI stage on top; 2nd stage and TLI stage use same engine, with different burn times. Concrete example: rd0105, 400s and 50s
In flight, TF window shows each engine earning its expected amount of DU as each burn; +~500 vs +~60
Back at space center after mission, go to VAB, start a failures-enabled sim with a rd-0105 to check DU amounts (possibly can also just check DU in VAB middle-click window): instead of earning either the sum of both earned values or the higher of the two, I see the engine has only been credited the DU from the last, short-burning stage.
Haven't been able to pinpoint steps; couldn't deliberately reproduce. But I've seen it happen twice now:
Given a 2-stage LV with a TLI stage on top; 2nd stage and TLI stage use same engine, with different burn times. Concrete example: rd0105, 400s and 50s
In flight, TF window shows each engine earning its expected amount of DU as each burn; +~500 vs +~60
Back at space center after mission, go to VAB, start a failures-enabled sim with a rd-0105 to check DU amounts (possibly can also just check DU in VAB middle-click window): instead of earning either the sum of both earned values or the higher of the two, I see the engine has only been credited the DU from the last, short-burning stage.