I am in the same position as the OP . Last time I did this , the check-in lady for the flight seemed to think this was a problem , and did not know about how stays could be extended using extensions and visa runs . Only after consultation with her supervisor did she allow me to proceed . I was quite annoyed having to argue with someone so ignorant who thought they knew better than me .
Maybe I will check with the airline before departure this time , just to be sure .