Field level Security not working.

Hi,

I have created field level security to disable Delete button. It's working perfect in test server but not in production. In Production If power user applied FLS to own-self its working but applied for other user no effect. End user window have been modified by VBA too.

Please guide me where i am missing. FLS is registered in Production server .

Thanks & Regards.

Amir Reza.

K.S.A