Contacted via EK website's chat, they got back to me after a couple of days with a useless challenge (for me)
Silver has a very low value and putting a CDG-DXB-CDG ticket in J on EK's loyalty would nearly qualify me for silver without status matching.
Would be useful for a very short loop from DXB to a local destination but I don't do that
"Thanks for contacting us regarding your status match request.
To review your request, I need a copy of your valid Air France membership card. Please submit your document using the link below. I’m unable to receive it if you attach while replying to my email.
https://www.emirates.com/english/help/forms/change-of-details ;
After sending the document, you'll also be required to complete the below flight criteria within 12 months for your account to be upgraded to Silver.
• Option #1: Two round trip Emirates flights in Economy class (Flex or Flex Plus fare)
OR
• Option #2: One round trip Emirates flight in Business or First class
Please note that Cash Plus Miles tickets and reward tickets are not eligible for this process.
Let me know if you need more help"