I created a raster overlay using map algebra (Raster calculator) in ArcGIS 10.2.2, which involved 15 raster images and their relative weights. When I tried to reclassify it under spatial analyst toolbox, it didn't reclassify according to the natural breaks which I provide in the toolbox. It created more classes after the data processing. Initially I thought that, it may be due to some bug in the software, but when I tried the same with ordinary raster image, it worked fine. Any clue, whats going on here?