I have just noticed that the part size can change when nesting, specifically when you have a closed tool line border that extends past the size of the part. when I nest it it changes the part size from 794mm to 801.5mm, as the spacing between parts on the nest is 15mm, half of that is the maximum it allows toolines to go without cutting them off but for some reason it is actually making my part bigger by that amount. This has just started happening but I have no idea what setting may have changed to allow this to happen, any ideas?