X-IRMC-LUID values

[vid]

I wish to sync my Sony Ericsson K610i Contacts with DeskNow.
I intend to do this by generating a Phonebook.dat file from DeskNow then syncing using MyPhoneExplorer. MPE will update my phone and I will import the updated Phonebook.dat back into DeskNow after the sync.
How should I set the X-IRMC-LUID field value?
Is there an easier way to achieve MPE-DeskNow syncing?

[FJ]

DeskNow ? Never heart of it.
TheX-IRMC-LUID-field is the entry-identifier for the phone. Never change it if the value exists.