Hi all

I am sorry if some of my questions have been discussed already, I could not find something with the search
I am planing on burning some of my CO miles with Emirates before CO and EK stop being friends in March.
I wanted to fly from Zrh to Dubai, stay there 2 days and continue to MLE. From ZRH to DXB i have avail. in Business saver, thats what I need, so that I can redeem CO miles. From DXB-MLE I cant find anything besides for Economy saver or Business flex. Will CO be able to book business if only Business flex shows? I can book economy now and change it later to business if it becomes avail. When are seats released for DXB-MLE normally? What are my chances?
Thanks for your advice