I modified (increased) the FDTD geometry as well as the analysis group. When I do this, FDTD solver responds accurately as visible in the .mat file (Pabs_diabolo_array_1mW.mat) which contains the optical absorption data for the extended x-and y-axis range in the analysis group (Pabs_adv). However, the HEAT solver does not respond even after importing the .mat file. It seems that the axis limits froze and are unable to be changed.