Audio TRack Mixer recording/ (WRITE MODE) fader volume levels error

Steps to reproduce:
    1. Using only 1 video/audio tack in the project, use WRITE MODE in Audio Track Mixer to record

       changes in fader volume levels for 10 seconcs.

    2. Trim a 3 second section of that track then cut / remove that section 

Result: With Audio Mixer Track now in READ mode, the changes in fader volume levels remain the same for 10 seconds which incorrectly chnages volume on the following 3 seconds of the nex section of the audio track which did NOT need Audio TRack Fader changes

Expected: I expected the 3 seconds of the deleted audio track to simultaneously delete the associated 3 seconds of the Audio Track Fader changes. i.e., if a 10 second Audio Track Fader change occurs using WRITE MODE in Audio Track Mixer, then 3 seconds of the audio track is rmeoved there should only be 7 seons of audio track with the corresponding 7 seconds of Audio Track Fader changes. The subsequent audio clip on that track should NOT be afftected. 
 
System info
    Application: Premiere Pro (Beta) v14.9.0.26
    OS: Windows v10.0.17134, RAM: 7.92 GB, CPUs (logical): 8