Placing Custom Abutment Cell

Hello,

I've developed a custom abutment cell and I'm trying to place it through the "Place Custom Abutment" tool. It appears to be placing it, and it shows up in the explorer window, but nothing shows up in the drawing. It will allow me to place a simple rectangular custom cell abutment, and it shows up in the drawing, but if I add wingwalls or a second shape to the cell, nothing will show up. I can place the same cell into the drawing manually, just using "Place Active Cell" and it shows up fine (see screenshot below). I could potentially place the cell manually but that sort of defeats the purposes of the Place Custom Abutment feature and I don't think it would show up in the explorer window as a bridge component.

Any help with this would be appreciated. Thanks.