AzureRM Geo Enabled resource deployment after a DR event


I am planning to use an Active-Passive DR strategy where in i will enable Geo replication on most of the data resources. I was wondering how terraform will behave in the event of a disaster. So for example, if I deploy cosmos in 2 regions and one of them goes down, cosmos will failover to the other region. Now, if I run a deployment on cosmos via terraform, will it work? or I will need to remove all traces of the failed region before I can deploy again?