"Aras.Server.Core.ItemNotFoundException" When transitioning from "In Work" to "Preliminary" with ECO Express's WF Activity

To you have added additional transition in your LifeCycle? Do you have added "Preliminary" by yourself?

For what do you want to use dynamic assignment? For back voting? That might it make a bit tricky, cause normally people use these kind of assignments to move "forward". As far as I remember dynamic assignments normally don´t require the PE_ChangeItemTransition. But I also remember that I customized the code to make my "In Work" --> "In Planning" transition work.

Where and how do you use your current code?