(1) Except as provided in Subsection (2), amendments to this part are prospective in nature and apply only to civil causes of action accruing after April 27, 1987.
(2) A crime committed before April 27, 1987, may comprise part of a pattern of unlawful activity if at least one of the criminal episodes comprising that pattern occurs after April 27, 1987, and the pattern otherwise meets the definition of pattern of unlawful activity as defined in Section 76-17-401.