Path conversion: From absolute to absolute

I'm responsible for some UFT tests developed some years ago. Those tests should be migrated from one server to a new one. As I found out, there are absolute paths linked to a technical user that does not exist anymore.

It seems that the paths are stored somewhere in non-text files. So it seems to be impossible to do it with grep/sed

Of course, I can open the 150 test cases one after the other and reset some but not all paths; because if the path is in a linked file, then I have to open that file as well.

Is there a way to convert outdated absolute paths to new paths?