3D Printer Enclosure Warning Sign

I wanted to print this in two colors (but I have a single color extruder) so I separated it into two parts, the base and the top. Then I use my BLTouch to make the printer think the top of the previously printed base is the bed, so the top is printed right onto the base. It's easier for me than pausing to change colors. No rushing over to make the color change, no worrying about setting up the printer to pause at the right height, etc.
I always have a problem with the print starting again after the pause, and having the printer go right back to print where it left off. It always bloody homes itself and starts fresh so I have to kill the printer and start all over again.

Print the base at 0.20 layer height, 0.40 walls and 20% infill
Print the top at 0.20 layer height, 0.40 walls and 100% infill

If you have a BLTouch, print the base, then reload the next color and print on top of the base for a dual-color print.

Otherwise print the base and top separately, then use super glue