There are actually 4 true clone replica GMT movements. The ARF SH3186 is different from the GMF SA3186, which uses a proprietary jump click that operates differently in terms of crown operation.
On the GMF SA3186, forward crown rotation in crown position 2 jumps the hour hand backward, like the 2824 CHS timebomb. This is opposite of how the VR/SH/Gen 3185/6 operates. The SA3186 sets time correctly (forward crown = forward hands in crown position 3), so its combination of crown operations is a mixed bag that matches no gen counterpart.
GMF recently upgraded their SA3186 to an SA3285, which changed how time sets to backward crown = forward hands in crown position 3, and keeping the hour jumping the same. This new combination of crown operations does match the gen 3285 counterpart. So if you have a 12671x rep this is the only rep true clone GMT movement with correct crown operations. However, both GMF movements use the greatly inferior SA3135 base, along with the poor SA3135 balance assembly.
Some more info in the link below below on GMF GMT movements
GMF released true clone 3285