anchor.diff:        CheckDate (OldValue, NewValue, curLine.ActualValue)
       else if curLine.Configuration.DataType = dtTime then
         CheckTime (OldValue, NewValue, curLine.ActualValue)
  +    else if curLine.Configuration.DataType = dtDateTime then
  +      CheckDateTime (OldValue, NewValue, curLine.ActualValue)
       else if curLine.Configuration.DataType = dtInteger then
         CheckInteger (OldValue, NewValue, curLine.ActualValue)
       else if (curLine.Configuration.DataType = dtFloat) then
  
positive.code:     function GetValueFromMemo (const aName : string; const aTrimValue : boolean) : string;
      procedure CheckDate (const aOldStringValue : string; var aNewStringValue : string; var aActualValue : variant);
      procedure CheckTime (const aOldStringValue : string; var aNewStringValue : string; var aActualValue : variant);
      procedure CheckInteger (const aOldStringValue : string; var aNewStringValue : string; var aActualValue : variant);
      procedure CheckYear(const aOldStringValue : string; const aDataType: TmEditorLineDataType; const aDistanceInMonths : integer; var aNewStringValue : string; var aActualValue : variant);
      procedure CheckMonth(const aOldStringValue : string; const aDataType: TmEditorLineDataType; var aNewStringValue : string; var aActualValue : variant);
  
negative.code:     end
      else if (curLine.Configuration.DataType = dtDate) and (curLine.Configuration.ChangedValueDestination is TNullableDateTime) then
        str := (curLine.Configuration.ChangedValueDestination as TNullableDateTime).AsString(false)
      else if (curLine.Configuration.DataType = dtDateTime) and (curLine.Configuration.ChangedValueDestination is TNullableDateTime) then
        str := (curLine.Configuration.ChangedValueDestination as TNullableDateTime).AsString(true)
      else if (curLine.Configuration.DataType = dtColor) then
        str := (curLine.Configuration.ChangedValueDestination as TNullableColor).AsString
      else if (curLine.Configuration.DataType = dtTime) and (curLine.Configuration.ChangedValueDestination is TNullableTime) then
  