Siebel Data Map sending blang tags in case the field value is null

Is there a way where we remove the tag from the mapping if the value is blank or null?

So for example, I have a  IC field mapping where it says: IIF([&AABRInternalSLADt] IS NULL,[created],[&AABRInternalSLADt]) where I don't want to include the AABRInternalSLADt tag if [&AABRInternalSLADt] is NULL. I tried with a dummy field which is not oresent in the source IC but that didnot work. The XML generated only the end tag (</AABRInternalSLADt >) in case he value is null.

Thanks in advance!!

Cheers,

Suprasanna