Existence of flips for generalized log canonical pairs

Let $(X,B+M)$ be a generalized log canonical pair, and let $f:X\to Y$ be a $(K_X+B+M)$-flipping contraction.

Existence of flips for g-lc pairs. The flip of every such flipping contraction exists.

Existence of flips is a fundamental expected component of the minimal model program for generalized pairs. The supplied text gives no resolution evidence, so the conjecture remains open here.