Well, first of all, a JAR license is an ICAO license - look at the cover page.
The implementation of ICAO Annex 1 varies from country to country, so the only way to know is to check the national flight crew licensing regulations of the country issuing your license. Generally, according to the definitions given in ICAO Annex 1, a TMG is an airplane, so your 200 hours should be valid unless your country's civil aviation authority has a specific limitation on that.