Exported UFO missing/different data

If I open a UFO and then export a UFO in Glyphs Version 2.0.0 (702), there is missing and different metadata:

Changed:

became: Anything to do with a `openTypeNamePreferredFamilyName` that was "The Family Name"?

postscriptBlueScale
Original was 0.039625 but became 0.039600000000000003

Missing:

Could you send me the original .ufo?

sent