Product: ImportOmatic
Description: This solution describes how to remove data or values using IOM

Environment: All

Version: 3.4.1.0 and higher 

Answer:

Go to the chosen data file and add a caret symbol ^ 

In Raiser's Edge, apply your field map as normal

Next click on Constituents on the left side of the screen, verify you have the correct settings in place to update the information

Lastly, after you import the new data will be saved