TG2 will certainly pop up an error message if you move a file, but if you edit the XML correctly and then load the file (the TGD obviously needs to not be open when you edit it and changes need to be saved), then it should load with the new paths just fine. If you think about it, this has to be true, because TG has no other knowledge of the location of files besides the file path specified in the TGD (with the exception of the "library" content search paths you can specify in Preferences), so if you change those file paths, it should change where TG looks for it.
- Oshyan