When using tables with sample size restrictions, columns representing groups with insufficient sample sizes are removed from the table output. However, the column lettering (A, B, C, …) is still assigned before the sample size restriction is applied. This results in lettering gaps (e.g., A, B, D) because hidden/excluded groups were assigned letters in the background. It would be helpful if: Column lettering was assigned after sample size restrictions, so only visible groups receive letters, or There was a rule/code option that forces sequential lettering for the displayed columns only.