A Little light on the mystery
 

While updating the cameras.dat tweak file to work with 1.4 I found a bug in the cameras.dat file. The section that is labeled Radioroom Radar doesn't effect the PPI, it effects the A scope. The section labled Radioroom Radar_AScope effects the PPI. The 1.2 tweak file just used the labels from withing the file and thus perpetuated the bug.

The reason you all couldn't see the changes that were made was they were mislabeled. You weren't actually looking at the changed areas.