Changing Mapped Object's Hierarchy

If you are editing an existing mapping in TestComplete, you'll see a warning that it's being used in a keyword test and given a choice to update it.  That has worked well for us.

If it will be a whole new mapping, then yes you will have to update your tests.  In our case, we did search and replace inside TestComplete, but it was each test separately.

I have seen other posts in the forum talk about updating files outside TestComplete but I am not familiar with that.  Not sure if if works with keyword tests or only with scripting.