PP - Where does it say that?
Annex II to Part-FCL requires an applicant to hold a valid class or type rating (which the OP does) and to have 500 hours flight experience as a pilot in the relevant type. Nowhere does it say that the flight experience must have been obtained while holding a particular rating.
In any case a type rating issued in accordance with §61.55 is compliant with ICAO Annex 1 (i.e. the rating could have been transferred even if the rating issued under §61.58 had not been held).