Bulk change content of multiple test cases it means words of multiple test cases NOT fields .
Example
I have 5 test sets each test set have more than 50 test cases so in total around more than 500 test cases . Each test case have a word "ABC" in test case steps and now that "ABC" is going to be change to "XYZ" for some business reason .
Problem
How to change "ABC" to "XYZ" in all of the test cases at once ? I can't go to every test case individually and update the test case steps manually .
Suggestions and solutions are welcome 