mapping joomla custom fields with CB fields

hi
is there any way to mapping joomla custom fields with CB fields?
for example i have Joomla site that was used joomla custom field and now i want install CB.also some of my form and some extension use joomla custom field. i want install CB and also continue use some Jcustom field extension.is there any way for live real mapping?(other than use CBAPI what is your advise?) i say real because don't want use query field type because don't save in __comprofiler

There's no functionality to output a Joomla custom field in CB. It's something we've planned for a future plugin or core field type. Only option would be to try to synchronize their storage using CB Auto Actions. Probably need to use queries directly on your database using a Query action. For CB to Joomla you'd just use the after user update and after user registration triggers. Not sure what trigger you need from Joomla to CB; you'll need to check Joomla documentation regarding that.