The difference between CPI and media production policies relates to how your cast is covered.
A media production policy will only cover reshoot costs if a cast member is unavailable due to death, accident or sickness whereas the CPI policy covers non-appearance due to anything beyond your control, including the individual being unable to travel because of strikes, weather or accidents.
Both policies exclude non-appearance due to Covid-19 or pre-existing conditions. Non-appearance of talent is only covered if pre-agreed in advance of the shoot.