Analyze Existing Data For Migration to New Data Model

We have data related to form building in the database but it is structured around the data model. In the implementation of the new data model I have not be careful to preserve the existing data since it does not match the data model.

We would like to do 3 things:

1) Analyze and document the data that exists in the current database relating to form building. Identify what is worth keeping and what does not make sense with the new model and can be disregarded.
2) For the data that is worth keeping, find out how it will need to be converted to fit the new data model. Not necessarily migration files or code but just high level data transformation.
3) Export the data that is worth keeping in a way that we can use it to be imported later in the new data model.

I will provide a database dump so you can work locally with the data locally.