diff --git a/src/Modules/CalcSetup.lua b/src/Modules/CalcSetup.lua
index 3cdb977be..482c3d4d2 100644
--- a/src/Modules/CalcSetup.lua
+++ b/src/Modules/CalcSetup.lua
@@ -781,14 +781,17 @@ function calcs.initEnv(build, mode, override, specEnv)
 		instrumentsOfPower = nodesModsList:Flag(nil, "InstrumentsOfPower") or false,
 		lordOfTheWilds = nodesModsList:Flag(nil, "LordOfTheWilds") or false,
 	}
-	local cache = build.itemsTab.lastWeaponFlagState
-	local losingGiantsBlood = cache and cache.giantsBlood and not weaponFlagState.giantsBlood
-	local losingInstrumentsOfPower = cache and cache.instrumentsOfPower and not weaponFlagState.instrumentsOfPower
-	local losingLordOfTheWilds = cache and cache.lordOfTheWilds and not weaponFlagState.lordOfTheWilds
-	if losingGiantsBlood or losingInstrumentsOfPower or losingLordOfTheWilds then -- Only validate socket when losing Keystone / Ascendancy
-		build.itemsTab:ValidateWeaponSlots(weaponFlagState)
+	-- Only mutate equipped items in the real build pass; calculator overrides (e.g. node power) are transient.
+	if mode == "MAIN" then
+		local cache = build.itemsTab.lastWeaponFlagState
+		local losingGiantsBlood = cache and cache.giantsBlood and not weaponFlagState.giantsBlood
+		local losingInstrumentsOfPower = cache and cache.instrumentsOfPower and not weaponFlagState.instrumentsOfPower
+		local losingLordOfTheWilds = cache and cache.lordOfTheWilds and not weaponFlagState.lordOfTheWilds
+		if losingGiantsBlood or losingInstrumentsOfPower or losingLordOfTheWilds then -- Only validate socket when losing Keystone / Ascendancy
+			build.itemsTab:ValidateWeaponSlots(weaponFlagState)
+		end
+		build.itemsTab.lastWeaponFlagState = { giantsBlood = weaponFlagState.giantsBlood, instrumentsOfPower = weaponFlagState.instrumentsOfPower, lordOfTheWilds = weaponFlagState.lordOfTheWilds }
 	end
-	build.itemsTab.lastWeaponFlagState = { giantsBlood = weaponFlagState.giantsBlood, instrumentsOfPower = weaponFlagState.instrumentsOfPower, lordOfTheWilds = weaponFlagState.lordOfTheWilds }
 
 	-- Build and merge item modifiers, and create list of radius jewels
 	if not accelerate.requirementsItems then