hi Tareq,
it seems like you are doing almost everything as you should.. on the function/event that calls the model.refresh you should be able to remove the item from the master list if successful, otherwise you could show a message. it seems like you have what you need, but you just need to add an additional step to removethe item from the master list...
further, in order to display the next item in the list, you could set the next item on the detail view and set its index/id to the currently being processed item item in the master list.