The minute your work permit is cancelled your visa becomes null and void if you were in extension of stay. If you were in first Non B for 90 days then you don't have to leave before it expires. If extension to stay then you have 24h to leave
As far as I know you have to get permission from your employer and it has to be officially added onto your existing work permit with both employers in agreement
well then noone can help him anyway !!! He would know that if he had done his research! He needs a minimum of 21 days left on any current visa to process any new visa. He's going to have to leave and come back and then start worrying!
p.s I want a 5y visa which is for people who are self employed or mature enough to work remotely for a company but I don't know how to ask any questions ❓❓ or do any research! Please send help! 😂