once the null values are updated is it possible to move the data o another collection in mongodb code example

Example: mongodb update

db.collectionName.update({"aField":"vale1"},{$set:{"anotherField":"value2"}})

-search for documentations for more examples than search
-aField is used to find the documents
-anotherField is the field that will be updated
-You can also use the below:
-- updateOne
-- findOneAndUpdate