Changed Sheet from Portrait to Landscape - New cells not showing up

The original table was in portrait form and I have now needed to add to more columns of data. I tried switching the orientation to landscape but now, even being switched to landscape, when I go to print, the preview does not show the 2 columns I have added. I have a feeling that excel is only "seeing" the original tables due to this dashed line (red arrow pointing to it in picture) and I do not know how to remove this "restriction" or even find out how to see all the settings for a cell or set of cells. excel 1.jpgexcel 2.jpg