WoWInterface - Problem with EnableMouse() and RaidPullout frame

The FrameName:EnableMouse(false) function that makes frame of your choosing uninteractive doesn't work with RaidPullout1 (old dragged raid frames)...

But I don't know if it's whether I simply don't have the right frame name (I think I tried every single one from framestack) or the frame is simply protected from being click-through - which would be a shame..

Pic rel:

And some code I found that was supposed to help (it didn't).

Lua Code:

local FrameCollection = {};
function GetChildrenTree(RaidPullout1) --- Walk the frame hierarchy recursively adding children.
        if Frame:GetChildren() then
           for _,child in pairs({Frame:GetChildren()}) do
                if child:IsMouseEnabled() then
                    tinsert(FrameCollection,child);
                end
                GetChildrenTree(child);
            end 
        end
    end
    GetChildrenTree(ParentFrame);
    
    -- check lock status and enable/disable mouse.
    if ParentFrame:IsVisible() then
        if Config.Locked then
            ParentFrame:EnableMouse(false);
           for _,childframe in pairs (FrameCollection) do
                childframe:EnableMouse(false);
            end
        else
            ParentFrame:EnableMouse(true);
            for _,childframe in pairs (FrameCollection) do
                childframe:EnableMouse(true);
            end        
        end
    end

A fellow lua dev couldn't help me, said he wasn't familiar with idiosyncrasies because he never used these frames.