Cheryl,

Perhaps somebody else will have a better idea or I may not understand your problem but I don't think there is a single step procedure for this. Certainly, no command that I know of to specify on the update command. I guess the way I might do this would be to add a variable to the master file (the file to be updated) and assign it a value, do the update operation, and then select cases from the resulting file such that the new variable has a non sysmis value.

Gene Maguin