My question didn't really get answered here but here it is rephrased:
There's only one recipe on the Anova site which deals with dehydrating and it recommends selecting the bottom element as heat source.
Do you suppose there is a problem if I have the baking tray sitting on the bottom of the oven (with a rack of eggplant on it)?? (All the other racks are occupied).
Edited to add: It would be simple to change heat source to the rear element. Okay, do you think?