Section 6-6.2. Rebuttable presumptions

In determining whether this part applies to specific property acquired
  during  a marriage by a spouse of that marriage the following rebuttable
  presumptions apply:
    (a)  Property acquired while domiciled in a jurisdiction  under  whose
  laws  property  could then be acquired as community property is presumed
  to have been acquired as or have become, and remained, property to which
  this part applies; and
    (b)  Property acquired while domiciled in a jurisdiction  under  whose
  laws property could not then be acquired as community property, title to
  which  was  taken  in  a  form  which created rights of survivorship, is
  presumed not to be property to which this part applies.