I'm considering dropping the last segment of a LHR-KUL-PNH ticket, and instead flying KUL-HKG on MH on a new ticket. The connection from PNH to HKG just doesn't work.

Anyone had problems with this in the past? I'm only concerned because the HKG flight leaves after the PNH flight so if I'm sitting in the lounge, might they call me to get on the PNH flight?