Question Plane detection is removing

Hi,
I make a AR application for home renovation so in my application i set 3 button 1 is for furniture 2 is for tiles and 3rd is for walls colors so when i click on 1st button first button then its detect horizontal plane then place furniture models on this plane this plane is invisible , in tiles button it detect horizontal plane and then i chenge the texture of the plane by multiple textures so the problem is when i click on tiles button its working well but when i click on furniture button my plane for tiles has been removed