Hi this is the answer I got today from support
Ticket:
673515extra SSD
Content:
Dear Kevin Pearson
Install additional memory module or SSD drive is allowed. Removing warranty sticker doesn't change anything in case of warranty rules, it is put just for informational purposes only, but please be aware that all damages connected with dismount computer or exchange any key components is not covered by warranty.
Best Regards,
MSI Customer Service Team