I really spend a lot of time searching for a solution to this problem. When I try using the Export plugin to export some entries with some Matrix fields and Neo fields for content, all that I can get is empty.
Seems to me that no one could've resolved the problem "Exporting / Importing all translatable Textfields of all entries in a section" or "How to export client-entered content for a specific channel to keep my local database in sync with staging" which my problem is similar to. I tried to search in the database for the content of the entry added by the client, found it and I'm working on how to replace it in my DB without causing errors, but the relation between tables still confuses me.
So my questions are, is there any solution yet? If not do I need to create a plugin that read Matrix fields and export it as JSON data? Do I continue in my attempts in the database to try and find the entries and their related content (is it possible)?
I hope I have explained enough clearly my situation.
P.S : I'm still a novice in Craft CMS so take it easy on me ^^