A:Answer Hello there. Thank you for reaching out with your question about the LWC3063ST oven. We understand that it can be a bit frustrating having to switch trays between different cooking modes. For the top oven, while using the convection bake mode, it's recommended to use the metal tray as it is designed to withstand the high heat and ensure even cooking. However, leaving the glass tray in the oven during convection bake mode could result in uneven cooking or damage to the glass.
As for accidentally leaving the metal tray in while using the microwave mode, we strongly advise against that, as metal trays can cause arcing, which may damage the unit or lead to safety hazards. To prevent this, always ensure you're using microwave-safe cookware when using microwave mode.
Please feel free to send us a private message on Social Media @LGUSSupport if you have more questions or need further assistance. We're happy to help explore more solutions with you. Thank you for your patience!
—Avril