Second seed Ghosal got past his Indian teammate Harinder Pal Sandhu 11-3 11-7 11-5. He next plays Adnan Nafiizwan of Malaysia.
Fourth seed Joshana overcame the challenge of Deon Saffery 9-11 11-8 11-3 11-7 and will now take on Malaysian Delia Arnold.
Seventh seed Arnold surprised many by reaching the semifinals of the British Open earlier in the month.