How to remove a state with another state?

[nightfall]

I want to add stages of bleeding and make a stage 2 to replace stage 1 bleeding. How do I do it?

[Caethyril]

Two simple options off the top of my head:

• Give the stage 2 state a "State Resist: stage 1" trait.
  (This will prevent the stage 1 state from applying while they have stage 2.)
  
  
• Remove the stage 1 state when you add stage 2.
  (Specific implementation depends on when/how you're adding the state.)

[Archeia]

I recommend suing this:
http://www.yanfly.moe/wiki/Buffs_%26_States_Core_(YEP)