Mcalmon–Oh–Xiang's CCW-arrow characterization of positroid quotients

Let $M'$ and $M$ be positroids, and write $M'\trianglelefteq_Q M$ for the quotient relation. A CCW-arrow is the interval associated with a positroid as in the preceding definition.

Mcalmon–Oh–Xiang's conjecture. $M'\trianglelefteq_Q M$ if and only if every CCW-arrow of $M$ is the union of CCW-arrows of $M'$.

This characterizes the quotient relation for positroids in terms of their CCW-arrows, extending the corresponding interval description for lattice path matroids. The supplied material gives no evidence that the statement has been proved or disproved.