ID 489256 - Motion blur is not applied to particles with a base animation.

Problem summary
Motion blur is not applied to particles with a base animation.

Customer reported version
13.0::13.0v4

Customer reported platform
ubuntu

Steps to reproduce
1) In Nuke, create a Checkerboard, Sphere and then a ParticleEmitter node, ensuring the particle input is used for the Sphere.
2) Add a Camera and ScanlineRender node downstream.

3) Open the Sphere Properties bin and keyframe the Y axis for a vertical animation.
4) Open the ParticleEmitter Properties and set the start frame value as 1.
5) Then set a keyframe for the emission rate value as 1 for the first keyframe, and 0 for the second keyframe.
6) Open the Camera Properties and set the Z value between 5 and 10.
6) View the ScanlineRender node, then start playback to view the motion blur.

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Expected behavior
The particles should have a correct motion blur applied.

Actual behavior
The motion blur sub-frame sampling does not account for particles with base animation.

Workaround
There is no available workaround at this time.

Reproduced by Support in:
Nuke 13.0v4 - Windows 10, macOS 10.15
Nuke 13.0v1 - Windows 10
Nuke 12.2v1 - Windows 10, macOS 10.15
Nuke 12.0v1 - Windows 10
Nuke 11.0v1 - Windows 10
Nuke 10.0v1 - Windows 10
Nuke 9.0v1 - Windows 10

Earliest version tested
Nuke 9.0v1 - This issue appears to be in all versions of the product