With the transition from Tableau 10 to 20.21.2, the following were identified with the upgrade:
The fields within the summary/raw data may not be returned in the same order/sequence as an earlier version of Tableau.
The colors used within the visualization may be impacted.
The labels within some of the workbook titles, including the axis labels may be differ from earlier version of Tableau.
The groupings within a chart may not be the same location (ie. show and booked events within the bar graph (7.1) differ between the two versions of tableau).
Below are a few examples to illustrate these changes:
Axis label from current report (10.3 Total Time Spent by Start Time)
Tableau 20.21.2 representation of label