If I remember correctly the wash out instructions if washing the quilt for the first time is water only, no soap or additives.
When I was hand quilting I used it for many of my quilts, even white on white whole cloth dating back to the 70's and never had the marks reappear. I've used the air erase also, for small projects, no problems there either. I wouldn't apply heat to either until that cold water wash....and there are variables I expect. I prewash all my fabrics, so no from-the-store additives in the fabric either.