Is the 'Day-to-night switch over' option missing in some Bosch cameras?
Yes!
Looking at the Bosch' high-end products (7000 and 8000) series Flexidome and Dinion, they have a double slider (Night-to-day and Day-to-night)
The series below that (3000 to 5000) have a single slider (only night-to-day).
The MIC series have also 1 slider named night mode threshold.
The CCP4 cameras → there is the same design:
This function was never available in these mid-range cameras.
This is not a bug. This scope was executed as designed.