A question to CO INSIDER

I have been informed that elites on flights flown by CO from HKG-SIN are not being EUA upgraded although according to the CO website, these 737 flights are indeed eligible. I am going to be on these flights in about 3 weeks and would certainly like to know if upgrading for elites is permitted. It is apparent from the CO thread that the ground staff is saying they are not and flights are leaving with empty F seats and with elites in Y.

I do not want to make a fool of myself. If these flights are indeed not EUA eligible, please let me know so I don't make a pest of myself. On the other hand, if the converse is true, then is it possible to inform the gound staff at these stations (and maybe send me a PM which I can copy and take with me to HKG) so I can at least be on the upgrade list? Thanks in advance.

Radonc1