Sumi Gaehsi Banned By IBJJF??

"3. Single leg take down with the head on the OUTSIDE will no longer be allowed for kids & white belts (ref will just stop & restart, no penalty). For blue to black it is allowed but if the opponent then does a counter takedown (by grabbing the belt like a ‘sumi gaeshi’) then they will be Dqed. (not very clear rule as of yet)"