8 years post endoscopic brow lift - Will upper eyelid surgery cause eyebrows to fall into former position?

I had an endoscopic brow lift about 8 years ago and I was 23 at the time. I am very satisfied. My eyebrows were very low and heavy. My eyelids are still heavy and a bit Asian style. I would like to do an upper eyelid surgery, but I'm afraid that the eyebrows will fall back to their former position! is this possible!? they are now in a good position and I don't want them to fall off..