Bryan and Bob
I checked throught some of my transcriptions of Hindman's Telegraphs and found a pattern of sorts that may help in your search.
It seems that Gen. Holmes had only arrived in Arkansas on August 8th, 1862 so that all of this reorganization of August 12th by Hindman was housekeeping at his (Holmes) direction.
Little Rock, August 15th, 1862
Colonel R. G. Shaver
In answer to your dispatch of the 12th inst. General Holmes directs me to say that officers not reelected at the reorganization are to be mustered out of the service. Those between the ages of 18 to 35 are subject to conscription.
R. C. Newton
A. A. Genl
It would seem that this reorganization effected all forces under Holmes command in Arkansas which at that time even included Parson's Missouri Brigade which had just recrossed the Mississippi River from Mississippi less than two weeks before.
Another example of these activities, that was part of this reorganization, was the formation of a lot of the independent Cavalry squadrons into regiments and the same was true for independent Infantry companies such as those which formed Crawfords Battalion.