keep/save jobs in deliver job queue

Hi,
why doesnt a project also save the already performed deliver jobs as well?
I would love to have eg. one job for Youtube, and one for high-quality, which is there for all times in my project. Whenever I do changes, I just re-render those two jobs and the output files are overwritten...
or what is wrong with my approach???
thx
Mike
why doesnt a project also save the already performed deliver jobs as well?
I would love to have eg. one job for Youtube, and one for high-quality, which is there for all times in my project. Whenever I do changes, I just re-render those two jobs and the output files are overwritten...
or what is wrong with my approach???
thx
Mike