katydid

I've been quilting for many years but only hand quilting. I recently have taken a couple quilts to a long arm quilter and they have done a beautiful job. They quilt edge to edge. Here is what I'm having issues with, and I've combed the internet and, I can't find anything out there. I used to sew on my binding 1/4" from the edge, after squaring up my quilt and cutting off the excess. Now I sew my binding on a 1/2" from the edge thinking this would solve the issue. I then wrap the binding around to the back and Hand sew it to the back.
I see some of the quilting coming super close to the machine sewn binding stitch or sometimes coming all the way out from UNDER the machine stitch and now my quilt has loose stitches. I hope I'm explaining this right. Anotherwords, the quilt stitching is not staying secured under the binding line stitches. This is new to me, and I can't be the only person out there with this issue!
When I hand quilted, I guess I never went to the edge or over my borders.
PLEASE HELP....
The last quilt I was literally trying to hand quilt and tie loose threads together for hours trying to fix her work so my quilt didn't come apart.