It does, after using ‘search by input’ it comes up as the throttle axis which it was previously assigned as. However, no movement is displayed on the axis visual and it only seemed to activate as a button press at certain points of the throttle’s travel, around 33% and 66%.
After posting last night, I was able to get it working after trying a fair few, clear throttle input, then validate, leaving the throttle assignment empty. Then re-assigning via select an input and selecting the axis without a + or - next to it. It reverted to only registering as a button input a couple of times during the session but I was able to re-do it through completing the process above again. Seems to be very hit / miss, surely some bug within MS FS and how the controller is interpreted? It consistently works as it should within the driver settings seen in Microsoft control panel and other simulators.