User would like to move grid record up\down by drag record to above or below line - on screen interactive action. 

However, in-house development team advise function it is not doable after code check - reference to Classes::CcFormTreeDatasource Line 318 indicate "Drag and drop is no longer supported - obsolete comment back in 2021. Based on the information available, it appears that the drag and drop functionality has been deprecated. Specifically, the existing grid control has been replaced by a new grid control.

But in other app of Microsoft like Azure Devops one, row to move drag and drop capability still available.

So if Microsoft team can involve and give customer an option to turn on or turn off this feature on demand could be great.