I often have similar reqirements for castings - if I simply edit an old switched of casting call with the new date & switch it back on with this appear in recent castings or is it better to create a new on for the new date.
create a new one from a copy & paste instead of re-typing the same thing.
Moderator Input Within reason it is acceptable to copy & paste into a new Casting Call with a new date.
However those who go to excess and repeatedly spam the system with the same work request (as some models have selfishly done on a daily basis and thereby generated complaints from those with Email Notifications set)
risk losing the privilege of being able to post Casting Calls