Hi Erik,
aye i know and i removed that feature (or bug) because it was a problem for all users who had the booking-fields and Joomla users (because the submission of the user was "overwritten", which caused a lot of trouble)..
Going to think on a solution for you..
Maybe i store the users name and email address in the database when the bookingfields don't exist. (but that's not a solution for your old bookings)
If you are in a hurry i can tell you the code-changes for showing the data again.
Kind regards,
Yves