24h transfer

Hi,

I'm currently in Norway, and I have flight tickets from Shanghai to Singapore in April. I was thinking of booking an one way ticket to Shanghai to be able to make that flight. I'm currently in the process of applying for a working permit from Norway (Z visa), however I will most likely only get 1 entry, and CANNOT use up this entry when transferring to my Singapore flight. Is it possible to tell the Immigration Officer that I only want 24 hours transfer, so they will not stamp my Z type? The flight tickets are booked with different airlines, so I will have to pick up my luggage in Shanghai and check in to Singapore flight.

I had a similar situation when flying via Shanghai to Hong Kong. I had to go through immigration to pick up my luggage and check in. The immigration officer allowed me to use 24 hours transfer, but at that time I didn't have an entry permit. Now I want to avoid stamping my Z type when transferring, so that I will get in to China after my holiday in Singapore.

I appreciate all help and answers I can get! Thank you in advance.