hi and thanks for reply. Sounds good.
I would check the bags for the whole trip if they allow me to do so in KUL (?).
I just remember last year flight to BKK on TG and out on BA - they refused to checkin my bags for the whole trip when I boarded TG in ChangMai (some unefficiency in BKK airport or principal rule not to check to the following OW flights...

) so I had to pick-up my bags from the carrusel in BKK Domestic and run to BKK International to check in on the onward BA flight to LHR... Hope Changi is better one:-)