I am unsure that I fully understand you. The heat map control does no sorting internally, it serves the horizontal and vertical definitions in a way to respect the items' order. In the categorical definition it respects the categories order - meaning that if a category "A" is first and then is category "B" - surely the heat map will position "A" before "B" (row-wise and column-wise).
In order for us to assist you I will ask that you provide us with a snapshot of your current output and data and also a drawing of some sort that depicts the desired result. We need this to understand what is the output that your application requires.
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