You entered in a whole number for ETC. After navigating elsewhere, you go to the assignments TSV view. You see that the Total ETCs has changed and is not what you originally entered.
Steps to reproduce
Expected Results - Total ETC displays the 100 that you entered
Actual Results - Total ETC displays a different number than entered.
All supported releases
The ETC total is the sum of what is displayed in the UI, not the entire project
If you would like to see the Total ETC from the entire project, change Start to Project Start date and Finish to Project Finish date in View Options