Thread tails and save design

[Dan*dy Designs]

Why do I get tails at the start of a design or when it starts sewing right after a trim that don't pull through to the back?

And, why don't my changes in Design Shop Pro+ save when I save them? If I change one thing in the name it will save, but if I just save under the same name, it doesn't always save the changes.

Thanks!
Cindy