Why Do I Have Consistant Migration of Lip Filler, in the Same Spot Above my Vermillion Line? (photo)

   This can happen when injecting anything.  If you know it happens, tell the injector to place pressure above that portion of the lip and do not inject directly into that area.

Dependent upon injection technique, filler can migrate and find the path of least resistance. Knowing this going in prior to treatment next time, be sure and have a thorough assessment with your provider, and consider not injecting in the exact same place. Ask your injector to find other techniques to improve the area.

Some people do have small pockets (or canals, as you call them), around their lips.  The result, as in your case, is that the filler injected will choose the path of least resistance and go into and fill the pocket.  There are a couple of methods that could be tried to avoid that issue in the future.  One method would be to try and not inject any Restylane in the part of the lip.  The other method that could be tried would be to hold pressure on top of the pocket when the Restylane is being injected to try and keep it from going in there.  I hope that is helpful.  

The movement along an area is certainly possible and in areas where this happens regularly, such as across the white roll, we often take advantage of it. I would alert your doctor and there are techniques that they can use to try to prevent this from happening. 

The material is likely following a blood vessel and tracking superiorly .  If this happens on m ore than one occasion,  begin the injection just medial to the vessel.  That should resolve this problem.