I'm thinking you may not be modelling in the Sheet Metal environment as there is a large GO TO FLAT PATTERN button on the Sheet Metal tab. This shows the bend line and bend extents based on your Sheet Metal Styles. Both of these can be shown/hidden in an IDW view of the part Flat Pattern.
Hope this helps. A screen capture of the part (or attaching it) would be helpful. Remember if attaching the part to roll the EOP up to decrease the file size.
I modeled it in sheet metal enviroment, I did flatten it out using flat pattern button but the mesurements I need to match up are not. When the patten is folded the mesurements are correct. If you go to my other posts I have attached a picture and the .ipt