sometimes you have the following problem: You ran a variation and get a results table with your evaluation e.g. parameter "a". But then you realize, oh I forgot to devide my parameter a by the density. So you create a new parameter called "b" in the baseline and then you drag this to the results table. But the value will be "nan". This is due to the fact, that in those older designs the parameter "b" is missing. (You can check that by changing into one of the older designs by double click on this design.)
At the moment we don't have a proper way of solving this issue, which is why I created a workaround.
You can find the full article here: