Come up with a list of questions to ask to know what to migrate

It'd be easier if we have a template of questions to ask a client to know what is to be migrated, for example:
- How many post types, how many posts for each ?
- How many taxonomies ?
- How many images, are where they're hosted ?
- Are there galleries to import ?
- Do we need to migrate authors/users, how many are there, how many roles/permissions and how do they map to WP roles ?
- Can we have a relational map of tables and their relation to each other ?
- Can we have a sample dump of DB ?
- Do we need to work on redirection from old URL structure ? ( 301 )

.. etc

Start from the example questions in the issue and organize them into a reusable client questionnaire for WordPress content migrations. Done means the template covers the requested content, media, users, database, and URL-redirection details and is added in the project's documentation location.

Written by the indexing model from the issue text.