I have proved $(\mathsf{RLD})_{\mathrm{in}} \Omega^{\mathsf{FCD}} = \Omega^{\mathsf{RLD}}$ (where $\Omega^{\mathsf{FCD}}$ is a cofinite funcoid and $\Omega^{\mathsf{RLD}}$ is a cofinite reloid that is reloid defined by a cofinite filter).
Note that in the previous draft there was a wrong formula for $(\mathsf{RLD})_{\mathrm{in}} \Omega^{\mathsf{FCD}}$.