Moffein

I'm currently designing a Coop-Strike map, but would like to create a separate branch with an altered layout (some sightlines closed off, some passageways changed, etc.) and submit it as a hostage map for the contest. Would I be allowed to do this? (The map currently has not been released to the public in any form) Also, if I were to submit the hostage version as part of the contest, would I be allowed to later release the Coop-Strike version on the workshop as its own completely separate thing while the contest is still ongoing?