Refactoring Date Time

I have been working on Refactoring the Date and Time UI.
The objective is Single/Multiple selection of Date, Time, or Datatime values.
The approach was to delete ha-date-input, ha-time-input and replace with
ha-datetime-input (For single selection) and ha-datetime-multiple-input.
These are called with appropriate configuration fo all of Date, Time, an DateTime selectors.
The other consumers of ha-date-input and ha-time-input are:

  • input_datetime entity editor.
  • various calendar editors
  • and something called: dialogs/more-info/controls/more-info-input-datetime

I have tested all but the last because I do not know where its used ? Any Ideas ?