Hi,
I've created a tool that draws graphics (Overlay) onto the screen to help identify sewer connections. It's all working fine....most of the time. See below for an example. What I am finding is that in some .aprx files the graphics draw fine, but in others they do not. I think it may be a case of when the .aprx is created by importing an old .mxd document into ArcGIS Pro. Does anyone know if that might be the cause?? Or should I be looking something else??
With a 'pure' .aprx file, no problems (ie. the red arrows get drawn):

With an imported .mxd to .aprx file, problems (ie. no graphics get drawn):
