Healing Wish/Lunar Dance now linger until they will do something, as per Gen 8

Data/Scripts/011_Battle/001_Battler/006_Battler_AbilityAndItem.rb

@@ -24,6 +24,40 @@ class PokeBattle_Battler
     pbAbilityStatusCureCheck
   end
 
+  #=============================================================================
+  # Called when a Pokémon enters battle, and when Ally Switch is used.
+  #=============================================================================
+  def pbEffectsOnEnteringPosition
+    position = @battle.positions[@index]
+    # Healing Wish
+    if position.effects[PBEffects::HealingWish]
+      if canHeal? || self.status != :NONE
+        @battle.pbCommonAnimation("HealingWish", self)
+        @battle.pbDisplay(_INTL("The healing wish came true for {1}!", pbThis(true)))
+        pbRecoverHP(@totalhp)
+        pbCureStatus(false)
+        position.effects[PBEffects::HealingWish] = false
+      elsif Settings::MECHANICS_GENERATION < 8
+        position.effects[PBEffects::HealingWish] = false
+      end
+    end
+    # Lunar Dance
+    if position.effects[PBEffects::LunarDance]
+      full_pp = true
+      eachMove { |m| full_pp = false if m.pp < m.total_pp }
+      if canHeal? || self.status != :NONE || !full_pp
+        @battle.pbCommonAnimation("LunarDance", self)
+        @battle.pbDisplay(_INTL("{1} became cloaked in mystical moonlight!", pbThis))
+        pbRecoverHP(@totalhp)
+        pbCureStatus(false)
+        eachMove { |m| m.pp = m.total_pp }
+        position.effects[PBEffects::LunarDance] = false
+      elsif Settings::MECHANICS_GENERATION < 8
+        position.effects[PBEffects::LunarDance] = false
+      end
+    end
+  end
+
   #=============================================================================
   # Ability effects
   #=============================================================================

Data/Scripts/011_Battle/002_Move/007_Move_Effects_100-17F.rb

@@ -933,6 +933,7 @@ class PokeBattle_Move_120 < PokeBattle_Move
     if @battle.pbSwapBattlers(idxA,idxB)
       @battle.pbDisplay(_INTL("{1} and {2} switched places!",
          @battle.battlers[idxB].pbThis,@battle.battlers[idxA].pbThis(true)))
+      [idxA, idxB].each { |idx| @battle.battlers[idx].pbEffectsOnEnteringPosition }
     end
   end
 end

Data/Scripts/011_Battle/003_Battle/006_Battle_Action_Switching.rb

@@ -327,23 +327,8 @@ class PokeBattle_Battle
     end
     # Update battlers' participants (who will gain Exp/EVs when a battler faints)
     eachBattler { |b| b.pbUpdateParticipants }
-    # Healing Wish
+    # Healing Wish/Lunar Dance
-    if @positions[battler.index].effects[PBEffects::HealingWish]
+    battler.pbEffectsOnEnteringPosition
-      pbCommonAnimation("HealingWish",battler)
-      pbDisplay(_INTL("The healing wish came true for {1}!",battler.pbThis(true)))
-      battler.pbRecoverHP(battler.totalhp)
-      battler.pbCureStatus(false)
-      @positions[battler.index].effects[PBEffects::HealingWish] = false
-    end
-    # Lunar Dance
-    if @positions[battler.index].effects[PBEffects::LunarDance]
-      pbCommonAnimation("LunarDance",battler)
-      pbDisplay(_INTL("{1} became cloaked in mystical moonlight!",battler.pbThis))
-      battler.pbRecoverHP(battler.totalhp)
-      battler.pbCureStatus(false)
-      battler.eachMove { |m| m.pp = m.total_pp }
-      @positions[battler.index].effects[PBEffects::LunarDance] = false
-    end
     # Entry hazards
     # Stealth Rock
     if battler.pbOwnSide.effects[PBEffects::StealthRock] && battler.takesIndirectDamage? &&

Data/Scripts/Gen 8 notes.txt

@@ -10,9 +10,6 @@ species because of this. This value is also shown in the Pokédex entry screen.
 (Will be implemented by me in the next PR)
 
 Some moves have changed properties/effects:
-- Healing Wish's effect and Lunar Dance's effect are no longer used up if a
-  Pokémon that switches to the targeted position can't make use of it. Each
-  position can only have one of each effect applied at once. (Will be implemented by me in the next PR)
 - Parting Shot is able to make the user switch out if its effect is redirected
   by Mirror Armor. Throat Spray is triggered and applies before the switch.
   (The Throat Spray part is done by default)
@@ -118,6 +115,9 @@ Move Effect Changes
   pbImmunityByAbility, but leaning towards yes; will Volt Absorb block an
   Electrified Howl?). Needs a new function code, since it now affects targets
   rather than the user.
+- Healing Wish's effect and Lunar Dance's effect are no longer used up if a
+  Pokémon that switches to the targeted position can't make use of it. Each
+  position can only have one of each effect applied at once.
 
 Item Effect Changes
 - Escape Rope's code now supports both consumable and non-consumable versions,