I came to concur today that poetry in it's form is a piece that is and will never be finished
You can revise and re-edit and recopy and rewrite it all you want, and say you are done, but really it will never be finished. It is something that you can write and come back to and re-write, but you must realize it will never be finished.
The reason I say this is because if a poem is finished, then that kills the existence of the poem itself. Why does there have to be an end? If there was an end, there would be no reason to read it or write it.
Poetry is always in motion.