Such information may be examined for use in preparation for any judicial proceeding or any investigation which may result in a judicial proceeding involving any of the taxes or tax credits specified in sub. (1) if: 1.
(1)#
The taxpayer is or may be a party to such proceeding;
(2)#
The treatment of an item reflected in such information is or may be related to the resolution of an issue in the proceeding or investigation; or
(3)#
The information relates or may relate to a transactional relationship between the taxpayer or credit claimant and a person who is or may be a party to the proceeding which affects or may affect the resolution of an issue in such proceeding or investigation.