I forgot to edit one of the triggers in the mission that starts the mechanized convoy to move after briefing. If the/a player stays infront of the officer during briefing, a timer will countdown, and once it reaches 0, the convoy will start moving the and the objectives will be updated.

BUT

If the player/if no player is present infront of the officer during briefing or if a/the player leaves the small area infront of the officer, the countdown will reset and will break the sequence events of the mission, thus requiring a restart.

I'll try and update this as soon as I could! I'll update all of ya' once this has been fixed.