If your system is up to it you can also use Volume Nodes for this same result (see image below)
This way you can drag the volume setting up/down on a linear view in the Tracks window (instead of using the mixer).
This doesn't move the mixer slider, but causes the same effect audibly.
Use whichever way works for you, but I suggest deciding on one over the other.

The two methods can be mixed/matched together, but once you do one you need to remember it will affect the other!
Having the slider go up/down abruptly while the Nodes are on a slope up (for example) will affect the results of the slider moves. Un-needed complexity and sometimes aggravation.

Since your question original question mentioned recording mixer moves, this may be your preferred method.

Also be aware on some systems Nodes can seem 'quirky'.
I think it depends on your drivers, system resources and number of events.
I had quirky issues when it was first introduced, but not in the last few years, your mileage may vary.

Using either the Mixer method or Nodes, know that how fast it responds depends on your driver selection.
Good ASIO drivers seem almost instant .. while MME will have a lag.

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