Problem import/export files and images

Problem/Motivation

I need to move the nodes of a site to a subdomain.

Steps to reproduce

- I export nodes of a content type using the Node export module.
- I import the nodes into the other site using the Node export module.

1. Content types with only Body are imported correctly, but without links; I have to add them by hand for each page and it is quite time consuming.
2. Content types with text, files, and/or images import text only.
3. Content types with text fields, taxonomies, etc. : I need to double check because they don't import correctly.

How to solve the problem?

Thank you and greetings