I am making a heritage quilt where I am using my home printer to put pictures on the "Printed Treasures" inkjet printable fabric. I have followed the instructions and rinsed the picture on the fabric in cold water to remove the excess ink. Now, here is my question. I prewashed my other quilting fabric, should I prewash the inkjet fabric pictures once the pictures are printed on it before I sew it into the quilt? There are no other instructions with the inkjet fabric paper about prewashing if the other quilt fabric is prewashed. What do you guys do??