3.13.1 Bug Report: Plots lose their pixel map assignments on show merge

I've now seen this in 3.13 and 3.13.1. But what I'm seeing is that every time I merge a show into a new show file any plots that are merged with it get their pixel map layers assigned reset. Is this working as intended or a bug? Currently every time I start a new show file I have to manually go to each of my pixel maps and re-assign layers to them. This is very annoying as my show template has about 10-15 plots with about 30 layers total. Every time we rig a new stage I have to merge the template and then go through and manually assign my layers to plots.