FND_FORM_CUSTOM_RULES
FND_FORM_CUSTOM_SCOPES
FND_FORM_CUSTOM_ACTIONS
FND_FORM_CUSTOM_PARAMS
FND_FORM_CUSTOM_PROP_VALUES
FND_FORM_CUSTOM_PROP_LIST

You can FNDLOAD utility to move one instance to another.

Or export and import this records from one instance to other. But make sure the sequences are altered 🙂

The below script list all the forms in Oracle Applications that have been customized using Forms Personlization:

select distinct a.form_name , a.enabled, c.USER_FORM_NAME, d.APPLICATION_NAME 
from FND_FORM_CUSTOM_RULES a,
     FND_FORM b,
     FND_FORM_TL c,
     fnd_application_tl d
where enabled = ‘Y’
and a.form_name = b.form_name
and b.form_id = c.form_id
and b.application_id = d.application_id

order by application_name;