Why is this rotating the part when I'm changing the CFrame?

So, I'm making a cannon and when the cannon is being shot it works perfectly fine but it rotates it 90 degrees when it's moving and it's annoying.

(I'm using TweenService by the way)

The bullet moves to the goal position I want it to, but it's rotating 90 degrees, the cannon's orientation is (0, 90, 0) but when I rotate the cannon to (0, 0, 0) it works perfectly fine with no rotations or anything but I need the cannon to face the direction I have it in which is (0, 90, 0) is there a way to keep the same rotation while moving the part?

local tweenService = game:GetService('TweenService')

local bullet = script.Parent.Bullet

local goals = {
    CFrame = CFrame.new(-2481.297, 266.085, -11116.204);
}

local info = TweenInfo.new(
    1,
    Enum.EasingStyle.Linear,
    Enum.EasingDirection.In
)

spawn(function()
    while wait(2.25) do
        local newBullet = bullet:Clone()
        newBullet.Transparency = 0
        newBullet.Touched:connect(function(hit)
            if hit.Parent:FindFirstChild('Humanoid') and hit.Parent ~= nil then
                hit.Parent:BreakJoints()
            elseif hit.Parent:IsA('Accessory') then
                hit.Parent.Parent:BreakJoints()
            end
        end)
        newBullet.Parent = script.Parent
        local down = tweenService:Create(newBullet, info, goals)
        down:Play()
        wait(.8)
        for i = 0, 1, .1 do
            newBullet.Transparency = newBullet.Transparency + 0.1
            wait()
        end
        newBullet:Destroy()
    end
end)