Create a loop in your microflow. Then iterate over the non-persistent list. For each iterator object you can now read the attribute values. Create new activities in the loop to handle the iterator object. You can create a new persistent object or find the matching object in the persistent list and then update that object.

Hopefully this helps you in the right direction.

create a microflow with input parameter list of non persistent objects and output list of persistent objects. Within the microflow map the non persistent entity to the persistent entity.

I hope you have manged to sort this out.

If not please follow the following steps:

1. Create a new microflow with the NonPersitable List as the input parameter
2. Create an list of the Persistable Objects
3. Using the iterator, interating on the NonPersistable List; create the Persistable object.
4. inside the interator, using the activity, add the new Persistable Object to the Persistable List.
5. Outside the iterator commit the Persistable list.

I hope this clarify things for you further.