Arc GIS 9.3 MXD is not saving

Discussion created by madhusha92 on Jan 27, 2012
I am using ArcGIS 9.3 version, My MXD is creating problem. If i save the mxd with shapefiles and IDW interapolation maps, and i close the mxd only shapefiles is visible IDW maps is not visible but the IDW layer in TOC is visible.

pls do the needful.