If it's simply a build up of Pledge, washing it using Murphy's Oil Soap should do the trick.
I suspect that you have a buildup of Pledge on this table. I have many pieces of wood furniture - new and antique. I dust them. With a duster or a Swiffer. No Pledge. No oil. No anything. They are all fine. I think you have damaged this piece with over cleaning & too much TLC. I am not sure how to get the buildup off the piece, but I think that this is what you need to do. Polyurethane doesn't need any type of polish or treatment.
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