Redmine

When I plan and organize projects I use issue relations pretty extensively. Specifically the precedes and follows relations. The issue I am having is that sometimes a certain task must be accomplished by a certain date as per project deadline requirements. However, if I have that task related to another and I try to change the scheduling of the other task then it sometimes changes the due dates on the tasks whose deadline is dictated by project requirements. Is there any way to prevent the due date from being changed during these situations? Ideally I would like it to simply change the delay between issues. It seems that once two issues are related to one another, the relation between them is locked in unless specifically changed but the start and due dates of the tasks are assumed to be negotiable.