We set up MDG-F in our central system some time ago using this document Using the Master Data Management Generic Extractor (MDMGX) for Initial Load in MDG-F (sap.com).
Due to project delays, there were major changes in the organisation in the meantime, which made many data records in MDG-F in Development system obsolete. MDG-F customizing is already implemented and remains valid.
Following questions:
The only resource I have found which might tackle the topic is MDG 8.0 in real life blog series – System “Reset” | SAP Blogs, but the mentioned attachment(s) is missing; the author does not seem to give any (public) answers to questions about them.