Mosaicking high resolution raster data is looking good in Erdas software even after zooming it several times whereas in ARC/ GIS after one zoom image disappeared. why?
There might be two reasons ; either there is projection problem with arcGIS or pyramid file is not created. What is format of output mosaic? If you are overlaying your raster with other vector data and there is projection problem in any layer, it may disappear image in arcgis.