Exactly six month back, my friend got a good job offer at dubai, and he just went to india from qatar With Emergency leave.
from India he goes to Dubai and he joined there and he got visa but still he did not cancelled his Qatar Residence Visa. so there was no issue at all. it happened six month back..but now...???? as you know Middle east, "every sun rise may bring a new rules" - so check with your company at dubai, whether they can get visa for you under this criteria.