The rules for San Andreas's Any% MDvMMw/CE category have undergone a slight change. Now you are only allowed to change the $ONMISSION variable in the game's memory using tools like Cheat Engine or On-Mission Changer.
The point of this change is to restore the original goal of the category, which was to see how fast San Andreas could be beaten if you were allowed to manipulate the $OM flag as freely as you can in GTA III or Vice City.
If you have any further questions about this rule change, feel free to reach out to the moderation team!