BINGO!!!
I SOLVED THE "domain_products_en.xml" PROBLEM.
For some reason, without realizing it, I suddenly have two configuration options for Google:
- Google Base Feeder Configuration
- Google Merchant Center Feeder Configuration
Google Base is the old one which I tried to change but nothing worked.
My first change of Google Merchant Center did the trick and all is well.
Thanks to everyone who tried to help.





