Moving to Japan under highly skilled visa while owning a business overseas

I have an opportunity to move to Tokyo under highly skilled professional visa. I'm clear that I need to pay tax on my salary as an employee.

However I also own a business as sole proprietor in Singapore. I am wondering what to do with this. I don't want to move my business to Japan yet since I have no idea how long i'll be staying there.

Is anyone here in similar situation? What did you end up doing?

by ichaBuNni