So, I don’t know if it's just a limitation of PO or what, but whenever I take an object that has glowing parts and convert it to a PO it will lose it.

For example, an LED road work message sign that glows in the dark, or a flashing arrow board. Convert it to PO to add text or adjust colors and it stops glowing/flashing in the dark, and only looks right when a light source like a street lamp or the sun is shining right in front of it.

Am I missing something?