Linda,
Due to the similarity in the writing of the letters "I" and "J" in the flamboyant cursive style of the Civil War times and to reduce confusion , some Civil War regiments had the practice of skipping the letters "I" and "J" and just go straight to using "K" and "L" . I know that I ran into this practice with some Alabama regiments . I have not looked at the 32nd Tx Cav. or Crump's Batt. so I could be "all wet" on this subject. However, if you encounter "disappearing I&J companies " , you might be seeing this practice .
Best Regards, Craig