I have a situation when I will be arriving in DXB on EK with an onward flight from DXB on EK many days later. In those days, I will be taking EY from AUH for a side trip, then coming back to AUH.

Since I am arriving in DXB on EK and have an onward ticket, EK will process my visa if I ask. If I enter on this visa, will I have an issue leaving from AUH on EY?

Not worried about my second entry into the UAE (at AUH on EY), since that will be a local company sponsored visa - so I should have not have a problem entering at AUH and leaving from DXB.