Good question, I believe there is no issue in exchange updating to 12.3.0+ as long as the exchange is on the right chain. If there is an exchange representative who needs assistance with ETNX for airdrop they know where to locate the ETNX team on Telegram
https://t.me/electronero and Twitter
https://twitter.com/_electronero Status update:
MapleChange.com LetsDoCoinz.com Instaswap.io have updated electronero to 12.3.0
Electronero team have made intensive efforts to fix all bugs, build up the project better day by day.
I believe that the project has bright future in front.
Please keep up all your dedication on the Electronero project.