Well, as it seems, there is no way of find/replacing other than inside a single method.
As a workaround, I did the following:
1- Committed all my image work in progress;
2- Opened the project structure in an external tool (notepad++ in this case) and did the find/replace there;
3- Committed it using git command line;
4- Back to the image, I did a repair repository from iceberg checking out and ignoring changes to the image (safe because I did commit everything before)
If there are many places to change, it is worth.
Regards,
Vitor