That's part of the "fees and interests" bit which is paid to the fund, not the general partnership. If it is paid to the general partnership, it interacts in a complicated way with the fund so as to ensure that if something like this happens, the GP reimburses (or through high water mark effects) pays the fund that money.

TL; DR Nobody on the Toys 'R' Us deal teams at these firms is happy about this, and all will find their lives in the industry a little bit harder going forward.