Guys, if I change the routing after ticketing it's 125 USD per change, not per segment, right? So, technically, I should be able to change every single sector, correct?

I currently hold

ICN-NRT-DEL-NRT-BKK-SYD-EZE-LIM-SCL-LIM-EZE-LHR-DXB-LHR-GVA-HEL-ICN

But schedule may be changing mid-trip (or even before the trip starts - I leave on the 4th of Jan) for one of my destination for work (BKK), where I may need to include it towards the end of the trip.

So, before departure I could change to following (and I would only incur 125USD change fee plus or minus any tax change):

ICN-HKG-BOM-SYD-EZE-LIM-SCL-IPC-SCL-MAD-GVA-LHR-DXB-LHR-SIN/BKK-NRT-ICN

After departure (fly first three segments) - would I incur only 125 USD change fee for following routing change?

(ICN-NRT-DEL-NRT)-SYD-EZE-LIM-SCL-IPC-SCL-MAD-GVA-LHR-DXB-LHR-HKG-ICN