I am using the mosaic to new raster tool to combine 3 rasters. They have the same pixel type and number of bands. In Environments -> Processing Extent, I select "union of inputs". When I run the tool, however, only the attributes of the first DEM that I selected in the tool's Inputs shows up. The range in the legend is still correct, but the actual values in the attribute table don't match the legend.
I've seen a couple other questions similar to this one but I haven't seen any answers to them. Does anyone know why my attribute table is only showing 1 of my raster dataset values?