Different Number of Frames imported from the same FBX between UE 4.8 and 4.9

Using the same import settings in UE4.8 and UE4.9 will result in a different number of frames of an animation being imported from the same FBX file.

If you import the same fbx animation which in Maya is between 0-29 (@30fps):

in 4.8.3 : the value of NumFrame of the UAnimSequence will be 30 and sequenceLength = 0.96666s
in 4.9 : the value of NumFrame of the UAnimSequence will be 29 and sequenceLength = 0.96666s

It's like NumFrames represented the number of keys in 4.8 and now it represents the number of intervals.

1. Launch any Blueprint project in UE4.8.3
2. Create a blank Test directory
3. Import the attached "A_FrameRate_Test" FBX using the same settings as the attached image, "48_ImportSettings.png"
*Primary animation settings: "Animation Length: Exported Time" and "Use Default Sample Rate" checked
4.NOTE: that the resulting value of NumFrame of the UAnimSequence will be 30 and sequenceLength = 0.96666s *See Image,"48_Results.png"
5. Now launch any Blueprint project in UE4.9
6. Create a blank Test directory
7. Import the attached "A_FrameRate_Test" FBX using the same settings as the attached image, "49_ImportSettings.png"
*Primary animation settings: "Animation Length: Exported Time" and "Use Default Sample Rate" checked
8. NOTE: that the resulting value of NumFrame of the UAnimSequence will be 29 and sequenceLength = 0.96666s *See Image,"49_Results.png"
RESULT: A difference in the number of frames is generated from the same FBX file between UE4.8.3 and UE4.9
EXPECTED: No difference in the number of frames generated from the same FBX file between UE4.8.3 and UE4.9