My apologies to the programmer. There is some funky stuff happening, but I just realized (duh) that the problem may be an incompatability between the ISTS reports and the version of MR-F (Generate MRP) that I'm using. My version of MR-F is one I pried out of DBA earlier this year. They fixed a couple of bugs in MRP. (Email me if you want specifics). There is still one problem when there are multiple delays for the same part and the dates overlap. Since DBA Updates are a thing of the past, I may be the only person using this version.