Didn't got a reply on the user list, hoping to get some help from the devs.
I noticed when having in a simple controller with several User Parameters (Preprocessors) with the "Update Once Per Iteration" flag marked, that the Preprocessors are run in reverse order. Simple Controller User Parameter P XX Q ${Q}q1 User Parameter P1 ${P} Q ${Q}q2 Debug Sampler In case "Update Once Per Iteration" is marked, P1=${P}, Q=${Q}q2q1 When not marked, P1=XX, Q=${Q}q1q2 Why does "Update Once Per Iteration" reverses the execution sequence of Preprocessors? Is this behavior intended and somewhere documented?