The generalised valley version of the Delta conjecture

Let $m,n,k\in\mathbb{N}$ with $k<n$, and let $\mathsf{LD}(m,n)^{\bullet k}$ denote the partially labelled rectangular Dyck paths with $k$ decorated valleys. For such a path $P$, let $\mathsf{dinv}(P)$, $\mathsf{area}(P)$, and $x^P$ denote its diagonal-inversion statistic, area, and monomial weight, respectively. Let $\Delta_{h_m}$ and $\Delta'_{e_{n-k-1}}$ be the Delta operators indexed by the complete and elementary symmetric functions. Generalised Delta conjecture, valley version.

$$\Delta_{h_m}\Delta'_{e_{n-k-1}} e_n = \sum_{P\in \mathsf{LD}(m,n)^{\bullet k}}q^{\mathsf{dinv}(P)}t^{\mathsf{area}(P)}x^{P}.$$

The source notes that this formula contains the preceding valley Delta conjecture as the special case $m=0$ and attributes it to Qiu and Wilson. Its status is not resolved in the supplied source.