I would remove the paper from the pp block before I sew it to the non pp block. I've sewn non pp blocks to pp blocks but I remove the paper at least from the seam allowance. I use the red binding clips to hold my blocks together so I don't get any distortion from trying to pin.
I hate removing paper from a quilt--did that once, never again! I've just finished pp 2 large quilts and removed all the papers as I completed the blocks. Try different methods and you'll find what works for you. Good luck!
Last edited by janRN; 11-17-2013 at 05:00 AM.