Spouses, Assistants, etc... don´t synch to IPhone "Contact" App. Why not? Is there a solution?

The Addressbook in Lion has entry blanks that enable one to list a person's relatives and work colleagues. This feature was also available in Snow Leopard and Leopard. These also exist in MobileMe, so when one synchs, the information from these entries are transferred to the Adressbook there. However there are no such entries on the IPhone's "Contact" App. so this valuable data does not get tranferred to the IPhone when synching. And the option to add fields doesn´t include these. Will Apple cure this annoying inconsistency? Do you experience the same problem? What do you recommend as an interim solution?.