migrate-mongo | A database migration tool for MongoDB in Node | Data Migration library

I am writing a migration with migrate-mongo and the Node driver for Mongo which both have not-so-great documentation. I am trying to take a field and nest it one level further. Here is an example of the original structure:

I have a nodejs server and I'm writing some migrations. For some reason my script is not recognizing the desired name for the migration: this is my script:

I have a mongo collection called fruit-data.in there i have document look like this.

I am trying to create a task for the npm script configured in package.json. So, here are the files:

package.json

Given I'm trying to keep track of changes made on my Mongo DB. I decided to make use of a little package called migrate-mongo. (https://www.npmjs.com/package/migrate-mongo)

Now my question is the following.

I understand that this will keep track of any changes made to my DB as long as I generate a new migration script and populate the up/down function with the changes and run migrate-mongo up/down

I definitely see the benefit in using this in when modifying collection validation in code for eg.

But what if I'm using an Express App that inserts a collection through an API call, how could I possibly keep track of that change in the changelog? What am I missing here...?

Thanks !