Attribute Aliasing

I'm trying to reconfigure my existing OpenLDAP server to expose personal information under multiple attributes. I'm doing this so that both Apple's contact application and my custom software will work. I've read about rwm-map in slapo-rwm, but although it makes the new attribute accessible, it hides the old one. I need both the new and old to be accessible.

For example: I have an existing attribute for a cellular phone number "cellPhone". I want to make this accessible under both the attributes "cellPhone" and "mobile"

Is this possible with OpenLDAP?

Thanks Russell Harmon