Thank you Sarah!
Regarding your “effective as of…” question… Yes, we will “zero” our writer pool after this weekend’s edition and that will be your cue to submit through the new channel. Medium will notify you you’ve been “removed” as a writer, but bear in mind this is only the technical language and not the actual case.
Regarding the notice to submit your accepted story we will try to be as prompt as humanly possible to give writers the time to submit. It will through private notes once we’ve added you back as a writer for that week. In regards to the second part of your question, I’m not sure how we would accommodate the type of situation where the writer can’t actually submit the story themselves in a timely manner but I promise to look into it and get back to you. Thanks again for all your wonderful stories and support!