I'm attempting to import emails with multiple To recipients.

I do an advanced find of all of the fields, export checking the box to show intent to reimport, export the list.

The "To recipient" field is blank.   Importing it in - the "To recipient" field is blank  (thought it might be hidden in some obscure hidden field)

I exported in same manner and type in 3 recipients all separated with a ; (as in Don Smith; John Smith, Mary Smith) 

Again, no errors, just no To recipients.  

I changed it from the look up mapping to the string field To recipient with same conclusion.

Does anyone know of a way to do this successfully?