I am glad to let you know that the functionality is currently available
on the task list. When working on the task list of a project, users with
manage access to the project and the tasks have the ability to disable
the Autosave on the task list and make several edits, undo/redo changes
when they are comfortable with those. If you haven't yet had a chance to
test it, you can learn more about this functionality in the release
notes
https://experience.workfront.com/s/article/2019-2-Project-Enhance...