Access to Work - PIP implications

Hi, I know that technically Access to Work has no effect on PIP entitlement. I am wondering if DWP can use any information I provide in an Access to Work assessment for use when reassessing or spontaneously reviewing my PIP. I have started a new position recently and have been advised Access to Work could be beneficial, but I am concerned that the DWP departments can and will share information which could put my PIP at risk. Do you know if they do this or if this has happened to other claimants?