NO!!! do not even mess with your batting, if your long-arm quilter does not provide the batting she will want it in it's original packagine in it's original state! not all batt's are created equal and have very different properties, some have to be quilted heavily (every 2") others can be quilted up to 10-12" apart. the quilter needs to know what she is working with. and when you read the batting packaging you will see that pre-washing is not necessary or recommended but they do give some instructions for those people who feel the need to go through the process...just because that's what they do...if you love the look after washing that is a plus, your quilter will love you for it ;)