Avoiding Avoidable Rework, for Creative Specialists

I’m trying to find the words for that problem: the one you face as a relatively competent specialist and/or expert in your particular field, where you can both design and execute (software-developer/hair-stylist/digital-fabricator/game-designer/PCB-designer/UI-UX-executioner/whatever), and a new requirement comes from a manager or client, and forces you to redo what you were working on and waste time on what you have already done. Wordy, but that problem.