Why is the damage script being ignored?

I made a shop GUI, and players are able to buy swords from it.

When someone first buys a sword, the damage script inside of the sword is being completely ignored for some reason.

I changed the it to a local script and it started to work fine.

I was wondering why was the damage script being ignored? If the player resets then the damage script works just fine, but when first buying the sword it isn't being run at all.

ShopGUI script:

local katanaButton = script.Parent
local player = game.Players.LocalPlayer
local replicatedStorage = game:GetService("ReplicatedStorage")
local storedKatana = game.replicatedStorage.Katana


katanaButton.MouseButton1Click:connect(function()
    if player.Backpack.Money.Value >= 100 and not player.Character:FindFirstChild("Katana") then

        local Katana = storedKatana:Clone()
        Katana.Parent = player.Character
        local RootPart = player.Character:FindFirstChild("HumanoidRootPart")

        Katana.CFrame = player.Character:FindFirstChild("Left Leg").CFrame * CFrame.new(-.6, .2, 1.7)
        Katana.CFrame = Katana.CFrame * CFrame.Angles(.3, 0, 1.5)

        local weld = Instance.new("Weld")
        weld.Part0 = RootPart
        weld.C0 = RootPart.CFrame:inverse()
        weld.Part1 = Katana
        weld.C1 = Katana.CFrame:inverse()
        weld.Parent = Katana

        player.Backpack.Money.Value = player.Backpack.Money.Value - 100

        script.Parent.Parent.TextLabel.Text = "Thank you, for your purchase!"
        wait(2)
        script.Parent.Parent.TextLabel.Text = "Sword Shop"

        local sword = Instance.new("StringValue")
        sword.Parent = player.StarterGear
        sword.Name = "Sword"
        sword.Value = "Katana"


    else
        if player.Character:FindFirstChild("Katana") then
            script.Parent.Parent.TextLabel.Text = "You already bought a Katana"
            wait(2)
            script.Parent.Parent.TextLabel.Text = "Sword Shop"
        elseif player.Backpack.Money.Value <= 100 then
            local cashreq = 100 - player.Backpack.Money.Value
            script.Parent.Parent.TextLabel.Text = "You need "..cashreq.." more money to purchase this"
            wait(2)
            script.Parent.Parent.TextLabel.Text = "Sword Shop"
        else
            script.Parent.Parent.TextLabel.Text = "Something went wrong with the script"
            wait(2)
            script.Parent.Parent.TextLabel.Text = "Sword Shop"
        end


    end
end)

Respawn script:

replicatedStorage = game:GetService("ReplicatedStorage")
storedKatana = game.replicatedStorage.Katana

game.Players.PlayerAdded:connect(function(player)
    local sword = player:WaitForChild("StarterGear"):WaitForChild("Sword")
    if sword then
        if sword.Value == "Katana" then
            player.CharacterAdded:connect(function(character)
                local Katana = storedKatana:Clone()
                Katana.Parent = player.Character
                local RootPart = player.Character:FindFirstChild("HumanoidRootPart")

                Katana.CFrame = player.Character:FindFirstChild("Left Leg").CFrame * CFrame.new(-.6, .2, 1.7)
                Katana.CFrame = Katana.CFrame * CFrame.Angles(.3, 0, 1.5)

                local weld = Instance.new("Weld")
                weld.Part0 = RootPart
                weld.C0 = RootPart.CFrame:inverse()
                weld.Part1 = Katana
                weld.C1 = Katana.CFrame:inverse()
                weld.Parent = Katana


            end)
        else
            print("something went wrong! 2")
        end
    else
        print("Something went wrong! 1")
    end
end)

Damage Script:

katana = script.Parent
player = game.Players.LocalPlayer
swingDamage = script.Parent.SwordDamage.Value
CanDamage = true





katana.Touched:connect(function(hit)
    local humanoid = hit.Parent:WaitForChild("Humanoid")

    if humanoid then
        if humanoid.Parent.Name ~= script.Parent.Parent.Name and CanDamage and script.Parent.Swinging.Value == true then
            CanDamage = false
            humanoid:TakeDamage(swingDamage + script.Parent.Combo.Value)
            print("Dealt ", swingDamage + script.Parent.Combo.Value, " damage")
            wait(1)
            CanDamage = true
        else
            print("something went wrong2")
        end
    else
        print("something went wrong1")
    end
    print("something went wrong0")
end)