Daubechies wavelets effect during the Denoising process

Hi everyone;

I'm really confused about some results I got during Denoising An image (a hole

in gray Background)as shown in the attached file the problem is the shift of

this hole every time I increase the number of vanishing time Db1...Db20

knowing that the Denoising is done at level3 Please help me I'm waiting your

response

Best Regards!